nymaim | 80bc5cf59fa0e901e8e6a46bce2cfe54caebd97c2a1acf4b4a5543b642b8f2b9

Analysis

max time kernel
91s
max time network
154s
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, 19:35

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General

Target
file.exe
Size 397KB
Sample221007-yan1fadebp
SHA256 80bc5cf59fa0e901e8e6a46bce2cfe54caebd97c2a1acf4b4a5543b642b8f2b9
MD5 657aef95d32dd1db1ad7d88585723887
SHA1 9d445ba88d6600320dd6ca55b503ec4e42e68d2e
SHA512 041770731824574af12d8b568c76ee85d6d1014261552f370e802a6cf97d16656b4c3d1da32c181ad499bf1d49d6d0947bbc1abe6366d23043fa5a9b151a382b
SSDEEP 6144:UkZ9HeAIzj0GOuVBHIqQX9DuYscC54o58RZH8x7ITsqe4:UkD+AIz+unHxiBdvDcx7R4
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
3500	198DgQZgYGSjL.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
1092	3140	WerFault.exe	80
3480	3140	WerFault.exe	80
3592	3140	WerFault.exe	80
2764	3140	WerFault.exe	80
4048	3140	WerFault.exe	80
4508	3140	WerFault.exe	80
2680	3140	WerFault.exe	80
3348	3140	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3180	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3140	file.exe
3140	file.exe
3140	file.exe
3140	file.exe
3140	file.exe
3140	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3180	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 3500	3140	file.exe	100
PID 3140 wrote to memory of 3500	3140	file.exe	100
PID 3140 wrote to memory of 3500	3140	file.exe	100
PID 3140 wrote to memory of 2244	3140	file.exe	107
PID 3140 wrote to memory of 2244	3140	file.exe	107
PID 3140 wrote to memory of 2244	3140	file.exe	107
PID 2244 wrote to memory of 3180	2244	cmd.exe	109
PID 2244 wrote to memory of 3180	2244	cmd.exe	109
PID 2244 wrote to memory of 3180	2244	cmd.exe	109

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:3140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 452
  2⤵
  - Program crash
  PID:1092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 468
  2⤵
  - Program crash
  PID:3480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 804
  2⤵
  - Program crash
  PID:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 468
  2⤵
  - Program crash
  PID:2764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 788
  2⤵
  - Program crash
  PID:4048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 956
  2⤵
  - Program crash
  PID:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 960
  2⤵
  - Program crash
  PID:2680
- C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\198DgQZgYGSjL.exe
  2⤵
  - Executes dropped EXE
  PID:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3140 -s 1440
  2⤵
  - Program crash
  PID:3348
- 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:2244
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3140 -ip 3140
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3140 -ip 3140
1⤵
PID:4252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3140 -ip 3140
1⤵
PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3140 -ip 3140
1⤵
PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3140 -ip 3140
1⤵
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3140 -ip 3140
1⤵
PID:216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3140 -ip 3140
1⤵
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3140 -ip 3140
1⤵
PID:4272

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

198DgQZgYGSjL.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\198DgQZgYGSjL.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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198DgQZgYGSjL.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\198DgQZgYGSjL.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/3140-144-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3140-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3140-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3140-142-0x00000000005DD000-0x000000000060E000-memory.dmp

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memory/3140-143-0x0000000002060000-0x00000000020B3000-memory.dmp

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memory/3140-132-0x00000000005DD000-0x000000000060E000-memory.dmp

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memory/3140-133-0x0000000002060000-0x00000000020B3000-memory.dmp

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memory/3140-146-0x00000000005DD000-0x000000000060E000-memory.dmp

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memory/3140-147-0x0000000000400000-0x0000000000468000-memory.dmp

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