nymaim | 2eb626fcdb5da57b83ea8aeb7319e72647101f1335bb1c61467676a9dfcc2ed2

Analysis

max time kernel
91s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 12:56

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General

Target
file.exe
Size 396KB
Sample221007-p6cgvacee5
SHA256 2eb626fcdb5da57b83ea8aeb7319e72647101f1335bb1c61467676a9dfcc2ed2
MD5 3003448736e89fa501b373767c45070e
SHA1 2d8798b9076de4c4d601181e9238eecd2553607c
SHA512 760e74072e1a283e6acf222822a1d429323c76f72ad3d6b77fc3b8cccf3e7dc5f135303704e6ba31f826855c132cc7d4ed3effa612667075a34289e9bb63b070
SSDEEP 6144:oSWd0iA+1NVfxX1bYWwn/WExRCEeAdAV71FxCkyuzbgwuZmwVfs:oP6SVf0/WYC++NxCunn3
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
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 1 IoCs

pid	Process
4040	8n7otOSLMJjdch.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
2364	3420	WerFault.exe	77
3988	3420	WerFault.exe	77
3348	3420	WerFault.exe	77
3816	3420	WerFault.exe	77
4836	3420	WerFault.exe	77
4788	3420	WerFault.exe	77
692	3420	WerFault.exe	77
3200	3420	WerFault.exe	77

Kills process with taskkill 1 IoCs

evasion

pid	Process
5052	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3420	file.exe
3420	file.exe
3420	file.exe
3420	file.exe
3420	file.exe
3420	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5052	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 4040	3420	file.exe	99
PID 3420 wrote to memory of 4040	3420	file.exe	99
PID 3420 wrote to memory of 4040	3420	file.exe	99
PID 3420 wrote to memory of 224	3420	file.exe	105
PID 3420 wrote to memory of 224	3420	file.exe	105
PID 3420 wrote to memory of 224	3420	file.exe	105
PID 224 wrote to memory of 5052	224	cmd.exe	107
PID 224 wrote to memory of 5052	224	cmd.exe	107
PID 224 wrote to memory of 5052	224	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 456
  2⤵
  - Program crash
  PID:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 764
  2⤵
  - Program crash
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 804
  2⤵
  - Program crash
  PID:3348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 792
  2⤵
  - Program crash
  PID:3816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 836
  2⤵
  - Program crash
  PID:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 804
  2⤵
  - Program crash
  PID:4788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1008
  2⤵
  - Program crash
  PID:692
- C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\8n7otOSLMJjdch.exe
  2⤵
  - Executes dropped EXE
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1436
  2⤵
  - Program crash
  PID:3200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3420 -ip 3420
1⤵
PID:1932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3420 -ip 3420
1⤵
PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3420 -ip 3420
1⤵
PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3420 -ip 3420
1⤵
PID:1908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3420 -ip 3420
1⤵
PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3420 -ip 3420
1⤵
PID:4816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3420 -ip 3420
1⤵
PID:3632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 388 -p 3420 -ip 3420
1⤵
PID:1256

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

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Downloads

8n7otOSLMJjdch.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\8n7otOSLMJjdch.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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8n7otOSLMJjdch.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\8n7otOSLMJjdch.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/3420-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3420-133-0x0000000002070000-0x00000000020C3000-memory.dmp

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memory/3420-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3420-142-0x000000000050D000-0x000000000053E000-memory.dmp

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memory/3420-143-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3420-132-0x000000000050D000-0x000000000053E000-memory.dmp

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memory/3420-145-0x000000000050D000-0x000000000053E000-memory.dmp

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memory/3420-146-0x0000000000400000-0x0000000000468000-memory.dmp

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