nymaim | 93ae2e4fbcb609127ca3958c19ea8af2cdebcdcbe1bb930fa09bbfb402acc3f8

Analysis

max time kernel
56s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11-01-2023 23:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

file.exe
Size

1.2MB
MD5

44e6769479cb819b98fcc3329dad3b12
SHA1

a8c8754c05c4fff672a34fc369ce4a237ad70782
SHA256

93ae2e4fbcb609127ca3958c19ea8af2cdebcdcbe1bb930fa09bbfb402acc3f8
SHA512

a82da651450ca8c95def6144fa52610dec479a834a5435fb7f32f54e9e05b3afdc3ee423102d2cd8ff9729661fce750240e099880b52f95a276f39af5b1ffdb8
SSDEEP

24576:q20IsukaO8wn2eHi6Enl5JN1B5HBmEO2mMbgVxQm+e6CQQgXC75ld1qSVpk:q2hkaO8C2eHiNzmEOabC+mZnd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1800	file.tmp
1356	LitFiles137.exe
2032	Chb6a.exe

Loads dropped DLL 6 IoCs

pid	Process
1412	file.exe
1800	file.tmp
1800	file.tmp
1800	file.tmp
1800	file.tmp
1356	LitFiles137.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-78GOJ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-P3BU7.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-JKT06.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-TFS70.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-1T6EC.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-SL2GG.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-SH9P1.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-JM5PI.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-E6CAQ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\is-IBL11.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-78N6C.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-742MV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-MMKPV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-LPPMI.tmp	file.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1632	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1356	LitFiles137.exe
1356	LitFiles137.exe
1356	LitFiles137.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1412 wrote to memory of 1800	1412	file.exe	27
PID 1800 wrote to memory of 1356	1800	file.tmp	28
PID 1800 wrote to memory of 1356	1800	file.tmp	28
PID 1800 wrote to memory of 1356	1800	file.tmp	28
PID 1800 wrote to memory of 1356	1800	file.tmp	28
PID 1356 wrote to memory of 2032	1356	LitFiles137.exe	29
PID 1356 wrote to memory of 2032	1356	LitFiles137.exe	29
PID 1356 wrote to memory of 2032	1356	LitFiles137.exe	29
PID 1356 wrote to memory of 2032	1356	LitFiles137.exe	29
PID 1356 wrote to memory of 1708	1356	LitFiles137.exe	32
PID 1356 wrote to memory of 1708	1356	LitFiles137.exe	32
PID 1356 wrote to memory of 1708	1356	LitFiles137.exe	32
PID 1356 wrote to memory of 1708	1356	LitFiles137.exe	32
PID 1708 wrote to memory of 1632	1708	cmd.exe	34
PID 1708 wrote to memory of 1632	1708	cmd.exe	34
PID 1708 wrote to memory of 1632	1708	cmd.exe	34
PID 1708 wrote to memory of 1632	1708	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Users\Admin\AppData\Local\Temp\is-D36UL.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D36UL.tmp\file.tmp" /SL5="$60122,1051168,212992,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1356
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Chb6a.exe
      4⤵
      Executes dropped EXE
      PID:2032
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1708
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
0ec8597399e6a436a30a09d0d6b034e4

SHA1
273a2618f24838558f370eaeebe5efe8a3fd1436

SHA256
a03e90a70690711592121d93fcce793671dc13c1ebaf7c2f3157f6fcfc7e06f5

SHA512
7206a8c21728abc02bacceaece8edc8f666482b7e9760f9c09f83ce11b19f2c96786653e99f810ca56bb7612fb594e4c897d44d3d281438ef50b3dc05695b501

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
0ec8597399e6a436a30a09d0d6b034e4

SHA1
273a2618f24838558f370eaeebe5efe8a3fd1436

SHA256
a03e90a70690711592121d93fcce793671dc13c1ebaf7c2f3157f6fcfc7e06f5

SHA512
7206a8c21728abc02bacceaece8edc8f666482b7e9760f9c09f83ce11b19f2c96786653e99f810ca56bb7612fb594e4c897d44d3d281438ef50b3dc05695b501

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-D36UL.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-D36UL.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Chb6a.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
0ec8597399e6a436a30a09d0d6b034e4

SHA1
273a2618f24838558f370eaeebe5efe8a3fd1436

SHA256
a03e90a70690711592121d93fcce793671dc13c1ebaf7c2f3157f6fcfc7e06f5

SHA512
7206a8c21728abc02bacceaece8edc8f666482b7e9760f9c09f83ce11b19f2c96786653e99f810ca56bb7612fb594e4c897d44d3d281438ef50b3dc05695b501

Download Submit
\Users\Admin\AppData\Local\Temp\is-2C6C1.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-2C6C1.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-2C6C1.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-D36UL.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Chb6a.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1356-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1356-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1356-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1356-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1356-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1356-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1412-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1412-54-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

Download
memory/1412-86-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1412-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1800-81-0x0000000003600000-0x00000000045C2000-memory.dmp

Filesize
15.8MB

Download
memory/1800-69-0x0000000003600000-0x00000000045C2000-memory.dmp

Filesize
15.8MB

Download