Malware Analysis Report

2025-04-13 10:39

Sample ID 221228-3absbsbh67
Target 7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8
SHA256 1847483f2f43d92a000f53f0def2429796aea79af8827d97bf6c77f166f534a2
Tags
nymaim discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1847483f2f43d92a000f53f0def2429796aea79af8827d97bf6c77f166f534a2

Threat Level: Known bad

The file 7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8 was found to be: Known bad.

Malicious Activity Summary

nymaim discovery trojan

NyMaim

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Checks installed software on the system

Drops file in Program Files directory

Enumerates physical storage devices

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-28 23:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-28 23:18

Reported

2022-12-28 23:20

Platform

win7-20220901-en

Max time kernel

57s

Max time network

61s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe"

Signatures

NyMaim

trojan nymaim

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\is-915CG.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-D5TS9.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-MMD7J.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\is-NNN1H.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\is-6U2MF.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-47OGI.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-VIQ55.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-VKMK6.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-NLARU.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\is-BOP0P.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\is-RNH4L.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-BNMOP.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-3LPV5.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-KR61S.tmp C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 2032 wrote to memory of 988 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 988 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1668 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 584 wrote to memory of 1912 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1912 wrote to memory of 1296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe

"C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe"

C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp

"C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp" /SL4 $70124 "C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe" 1837330 217600

C:\Program Files (x86)\Split Files\SplitFiles123.exe

"C:\Program Files (x86)\Split Files\SplitFiles123.exe"

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles123.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles123.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles123.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp

Files

memory/2032-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

memory/2032-55-0x0000000000400000-0x000000000043B000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

memory/988-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-F8F4O.tmp\is-621U7.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

\Users\Admin\AppData\Local\Temp\is-LFEMC.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Users\Admin\AppData\Local\Temp\is-LFEMC.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-LFEMC.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

memory/584-66-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

memory/2032-72-0x0000000000400000-0x000000000043B000-memory.dmp

memory/988-73-0x00000000039C0000-0x0000000004AF8000-memory.dmp

memory/584-74-0x0000000000400000-0x0000000001538000-memory.dmp

memory/584-75-0x00000000019A0000-0x0000000002AD8000-memory.dmp

memory/584-76-0x00000000019A0000-0x0000000002AD8000-memory.dmp

memory/584-77-0x0000000000400000-0x0000000001538000-memory.dmp

memory/584-78-0x0000000000400000-0x0000000001538000-memory.dmp

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/1668-80-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\onPOgX135BJPm.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/584-86-0x0000000010000000-0x000000001001B000-memory.dmp

memory/584-90-0x0000000000400000-0x0000000001538000-memory.dmp

memory/584-91-0x0000000000400000-0x0000000001538000-memory.dmp

memory/1912-92-0x0000000000000000-mapping.dmp

memory/1296-94-0x0000000000000000-mapping.dmp

memory/584-96-0x0000000000400000-0x0000000001538000-memory.dmp

memory/2032-97-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-28 23:18

Reported

2022-12-28 23:20

Platform

win10v2004-20220812-en

Max time kernel

92s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\is-R1GQF.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-59KR4.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\is-SM6N0.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\is-GRKI2.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\is-HCQJQ.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-IIDGH.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-HIA5S.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-FNF9O.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-LJTMQ.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-KHDU6.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-E7Q27.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-CKA4G.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7CIQC.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A
File created C:\Program Files (x86)\Split Files\is-L7VFP.tmp C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1932 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp
PID 1932 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp
PID 1932 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp
PID 5068 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 5068 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 5068 wrote to memory of 4912 N/A C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 4912 wrote to memory of 4472 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe
PID 4912 wrote to memory of 4472 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe
PID 4912 wrote to memory of 4472 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe
PID 4912 wrote to memory of 2596 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 4912 wrote to memory of 2596 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 4912 wrote to memory of 2596 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 2596 wrote to memory of 4408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2596 wrote to memory of 4408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2596 wrote to memory of 4408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe

"C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe"

C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp

"C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp" /SL4 $9006C "C:\Users\Admin\AppData\Local\Temp\7a9e33c5307748d5eda1d300f55a0d5efa045edce88bf6d4e2806393f65580b8.exe" 1837330 217600

C:\Program Files (x86)\Split Files\SplitFiles123.exe

"C:\Program Files (x86)\Split Files\SplitFiles123.exe"

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles123.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles123.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles123.exe" /f

Network

Country Destination Domain Proto
N/A 93.184.220.29:80 tcp
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp
N/A 95.101.78.82:80 tcp
N/A 95.101.78.82:80 tcp
N/A 104.80.225.205:443 tcp
N/A 51.11.192.48:443 tcp
N/A 209.197.3.8:80 tcp
N/A 209.197.3.8:80 tcp
N/A 209.197.3.8:80 tcp

Files

memory/1932-132-0x0000000000400000-0x000000000043B000-memory.dmp

memory/5068-134-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

C:\Users\Admin\AppData\Local\Temp\is-TDBU2.tmp\is-4IQFU.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

C:\Users\Admin\AppData\Local\Temp\is-61CO9.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/1932-138-0x0000000000400000-0x000000000043B000-memory.dmp

memory/4912-139-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 ed6b7e901e1bb5d2f621de3302069796
SHA1 c9ef00f91c1b3d1115f3258a9367b1b578594289
SHA256 cfca78bd05c37a53f833dbce3f17313d813b3986e56265f37ce1c2a5f175d878
SHA512 fd3fc1db8e3e1ceb7bf8a4c7de26cd3dc880543735f8a591248f6a2a608f2dccb67c858cec8a973aecd96355d0d37ee646bac592106066471ee90f7729eea91e

memory/4912-142-0x0000000000400000-0x0000000001538000-memory.dmp

memory/4912-143-0x0000000000400000-0x0000000001538000-memory.dmp

memory/4912-144-0x0000000000400000-0x0000000001538000-memory.dmp

memory/4472-145-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\4MEfE6KBD7red.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/4912-148-0x0000000010000000-0x000000001001B000-memory.dmp

memory/4912-152-0x0000000000400000-0x0000000001538000-memory.dmp

memory/2596-153-0x0000000000000000-mapping.dmp

memory/4408-154-0x0000000000000000-mapping.dmp

memory/4912-155-0x0000000000400000-0x0000000001538000-memory.dmp

memory/1932-156-0x0000000000400000-0x000000000043B000-memory.dmp