Malware Analysis Report

2025-06-16 05:09

Sample ID 221223-ds2n2aah3t
Target file.exe
SHA256 c27756b2d89d78d665ec7507ffacd7825f174dad2e69610f08a05cdfd8194868
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

c27756b2d89d78d665ec7507ffacd7825f174dad2e69610f08a05cdfd8194868

Threat Level: Known bad

The file file.exe was found to be: Known bad.

Malicious Activity Summary

nymaim discovery trojan

NyMaim

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

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

2022-12-23 03:17

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-23 03:17

Reported

2022-12-23 03:19

Platform

win7-20221111-en

Max time kernel

55s

Max time network

56s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.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\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-V9U34.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-H0EG7.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\is-V3OH6.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\is-THVO8.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-5UMKO.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-PETM6.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\is-C4EOF.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-0A1RO.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-9E778.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\is-E5L31.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-13K2O.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-4VMST.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-CPR4T.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A
File created C:\Program Files (x86)\Split Files\is-5QR9A.tmp C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.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\SplitFiles118.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles118.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-J3F02.tmp\is-BEJN9.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1260 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1756 wrote to memory of 688 N/A C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1496 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\GNjdc.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 688 wrote to memory of 1924 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1924 wrote to memory of 1236 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp

"C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp" /SL4 $A012C "C:\Users\Admin\AppData\Local\Temp\file.exe" 1791779 133120

C:\Program Files (x86)\Split Files\SplitFiles118.exe

"C:\Program Files (x86)\Split Files\SplitFiles118.exe"

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles118.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles118.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles118.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/1260-54-0x0000000075291000-0x0000000075293000-memory.dmp

memory/1260-55-0x0000000000400000-0x0000000000427000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp

MD5 703b4da86c2d38881230d26bc1051cb2
SHA1 13b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA256 90b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512 e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b

memory/1756-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp

MD5 703b4da86c2d38881230d26bc1051cb2
SHA1 13b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA256 90b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512 e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b

C:\Users\Admin\AppData\Local\Temp\is-J3F02.tmp\is-BEJN9.tmp

MD5 703b4da86c2d38881230d26bc1051cb2
SHA1 13b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA256 90b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512 e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b

\Users\Admin\AppData\Local\Temp\is-QJ3A0.tmp\_isetup\_shfoldr.dll

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

\Users\Admin\AppData\Local\Temp\is-QJ3A0.tmp\_isetup\_shfoldr.dll

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

\Users\Admin\AppData\Local\Temp\is-QJ3A0.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

memory/1260-66-0x0000000000400000-0x0000000000427000-memory.dmp

memory/688-67-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

memory/1756-70-0x0000000003930000-0x0000000004A7D000-memory.dmp

\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

C:\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

memory/688-74-0x0000000001A40000-0x0000000002B8D000-memory.dmp

memory/688-75-0x0000000001A40000-0x0000000002B8D000-memory.dmp

memory/688-76-0x0000000000400000-0x000000000154D000-memory.dmp

memory/688-77-0x0000000000400000-0x000000000154D000-memory.dmp

memory/688-78-0x0000000000400000-0x000000000154D000-memory.dmp

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

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

memory/1496-80-0x0000000000000000-mapping.dmp

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

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

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

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

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

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

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

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

memory/688-86-0x0000000010000000-0x000000001001B000-memory.dmp

memory/1756-90-0x0000000003930000-0x0000000004A7D000-memory.dmp

memory/688-91-0x0000000001A40000-0x0000000002B8D000-memory.dmp

memory/688-92-0x0000000000400000-0x000000000154D000-memory.dmp

memory/1924-93-0x0000000000000000-mapping.dmp

memory/688-96-0x0000000000400000-0x000000000154D000-memory.dmp

memory/1236-95-0x0000000000000000-mapping.dmp

memory/1260-98-0x0000000000400000-0x0000000000427000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-23 03:17

Reported

2022-12-23 03:19

Platform

win10v2004-20221111-en

Max time kernel

91s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles118.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.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\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-KNL55.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\is-ALF9N.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\is-CHI8E.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-LS39R.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-JSI86.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-URR4F.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\is-L8RBA.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\is-3IPF1.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\is-66IBK.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-DM845.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-AC9JV.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-V0SKD.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-9IOHV.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-NUH9B.tmp C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.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 4404 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp
PID 4404 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp
PID 4404 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp
PID 1200 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1200 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 1200 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp C:\Program Files (x86)\Split Files\SplitFiles118.exe
PID 2840 wrote to memory of 232 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe
PID 2840 wrote to memory of 232 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe
PID 2840 wrote to memory of 232 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe
PID 2840 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 2840 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 2840 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles118.exe C:\Windows\SysWOW64\cmd.exe
PID 3772 wrote to memory of 2192 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 3772 wrote to memory of 2192 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 3772 wrote to memory of 2192 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp

"C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp" /SL4 $B0170 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1791779 133120

C:\Program Files (x86)\Split Files\SplitFiles118.exe

"C:\Program Files (x86)\Split Files\SplitFiles118.exe"

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles118.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles118.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles118.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 20.44.10.123:443 tcp
N/A 8.238.20.126:80 tcp
N/A 8.238.20.126:80 tcp
N/A 104.80.225.205:443 tcp
N/A 8.238.20.126:80 tcp
N/A 8.238.20.126:80 tcp
N/A 204.79.197.203:80 tcp

Files

memory/4404-132-0x0000000000400000-0x0000000000427000-memory.dmp

memory/1200-134-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp

MD5 703b4da86c2d38881230d26bc1051cb2
SHA1 13b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA256 90b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512 e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b

C:\Users\Admin\AppData\Local\Temp\is-5H1D1.tmp\is-8GRCL.tmp

MD5 703b4da86c2d38881230d26bc1051cb2
SHA1 13b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA256 90b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512 e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b

C:\Users\Admin\AppData\Local\Temp\is-U2U38.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/4404-138-0x0000000000400000-0x0000000000427000-memory.dmp

memory/2840-139-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

C:\Program Files (x86)\Split Files\SplitFiles118.exe

MD5 c7c087a7138c8e4911ae69f7cf6592d9
SHA1 8dbc2f9732aaa66f69a4b1f57ca20828eca908c3
SHA256 d5132780c6f824d620e59c66c2bbb027b96e2728af13dc2221eb4ee044620a75
SHA512 faffd8a3317013b0e78046fdccdbfdc4dcdbe3f60d73acaadee3403d5f0e87de9768b7b91cda327559dc02f8e594e8125f3c0a6dfe8b5bbbfd4d95df5040b1b9

memory/2840-143-0x0000000000400000-0x000000000154D000-memory.dmp

memory/2840-144-0x0000000000400000-0x000000000154D000-memory.dmp

memory/232-145-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe

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

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\3dWQw3ZLI.exe

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

memory/2840-148-0x0000000010000000-0x000000001001B000-memory.dmp

memory/2840-152-0x0000000000400000-0x000000000154D000-memory.dmp

memory/3772-153-0x0000000000000000-mapping.dmp

memory/2192-154-0x0000000000000000-mapping.dmp

memory/2840-155-0x0000000000400000-0x000000000154D000-memory.dmp

memory/4404-156-0x0000000000400000-0x0000000000427000-memory.dmp