nymaim | 1b791006a7e6e884489c02fa3b3d4a8e0bead8f245bd4e5c8c73da0831278c1e

Analysis

max time kernel
109s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2022, 11:13

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General

Target
file.exe
Size 383KB
Sample220928-nbehaaggfn
SHA256 1b791006a7e6e884489c02fa3b3d4a8e0bead8f245bd4e5c8c73da0831278c1e
MD5 27d460d0e1293c7e02f81a158289f52e
SHA1 ece31259fad90230700c473ac2de91a6f8c37091
SHA512 4bccaebdf48139e81fa87401bf7574a1a581fca1bff4eb3f5cd920d74241b6d596211da4d5bab9753fb294081d2cc2b0d0ad03d1e144729d7d5fe2c74b492326
SSDEEP 6144:F7AF+KeOuZfeD2WA+UQfyTm6jr46jnajfZu6C290j0FFigavwVfIf:FMYPXfeD5A+Ur66jr46eZC29/FIRf
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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4764	Cleaner.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
4588	3196	WerFault.exe	82
1080	3196	WerFault.exe	82
1056	3196	WerFault.exe	82
4440	3196	WerFault.exe	82
4852	3196	WerFault.exe	82
4768	3196	WerFault.exe	82
3732	3196	WerFault.exe	82
3900	3196	WerFault.exe	82
1020	3196	WerFault.exe	82
4520	3196	WerFault.exe	82
852	3196	WerFault.exe	82
1728	3196	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
800	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3196	file.exe
3196	file.exe
3196	file.exe
3196	file.exe
3196	file.exe
3196	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3196	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4764	Cleaner.exe
Token: SeDebugPrivilege	800	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3196 wrote to memory of 1712	3196	file.exe	113
PID 3196 wrote to memory of 1712	3196	file.exe	113
PID 3196 wrote to memory of 1712	3196	file.exe	113
PID 1712 wrote to memory of 4764	1712	cmd.exe	115
PID 1712 wrote to memory of 4764	1712	cmd.exe	115
PID 3196 wrote to memory of 3184	3196	file.exe	131
PID 3196 wrote to memory of 3184	3196	file.exe	131
PID 3196 wrote to memory of 3184	3196	file.exe	131
PID 3184 wrote to memory of 800	3184	cmd.exe	135
PID 3184 wrote to memory of 800	3184	cmd.exe	135
PID 3184 wrote to memory of 800	3184	cmd.exe	135

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 behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 452
  2⤵
  - Program crash
  PID:4588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 768
  2⤵
  - Program crash
  PID:1080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 776
  2⤵
  - Program crash
  PID:1056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 776
  2⤵
  - Program crash
  PID:4440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 872
  2⤵
  - Program crash
  PID:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 952
  2⤵
  - Program crash
  PID:4768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 960
  2⤵
  - Program crash
  PID:3732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1056
  2⤵
  - Program crash
  PID:3900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1400
  2⤵
  - Program crash
  PID:1020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1416
  2⤵
  - Program crash
  PID:4520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1476
  2⤵
  - Program crash
  PID:852
- 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:3184
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 492
  2⤵
  - Program crash
  PID:1728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3196 -ip 3196
1⤵
PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3196 -ip 3196
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3196 -ip 3196
1⤵
PID:384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3196 -ip 3196
1⤵
PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:4560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3196 -ip 3196
1⤵
PID:1668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3196 -ip 3196
1⤵
PID:1040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3196 -ip 3196
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3196 -ip 3196
1⤵
PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3196 -ip 3196
1⤵
PID:2448

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Cleaner.exe
Size 4.2MB
SHA256 663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f
MD5 e89589df13ac2783f322449f63547468
SHA1 bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6
SHA512 9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6
SSDEEP 98304:B3D///UUrPV0vER7ehER7ehER7ehER7ehER7ehER7ehER7ehER7eG:Zacfffffffb
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\tWTUfnVI6zT\Cleaner.exe
Size 4.2MB
SHA256 663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f
MD5 e89589df13ac2783f322449f63547468
SHA1 bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6
SHA512 9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6
SSDEEP 98304:B3D///UUrPV0vER7ehER7ehER7ehER7ehER7ehER7ehER7ehER7eG:Zacfffffffb
MD5 SHA1 SHA512 SSDEEP

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memory/3196-132-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/3196-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3196-153-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/3196-141-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/3196-152-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/3196-134-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/3196-140-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/3196-133-0x00000000005F0000-0x000000000062F000-memory.dmp

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memory/4764-145-0x00007FFC45E00000-0x00007FFC468C1000-memory.dmp

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memory/4764-144-0x00007FFC45E00000-0x00007FFC468C1000-memory.dmp

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memory/4764-143-0x000001E98D1B0000-0x000001E98D1F2000-memory.dmp

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memory/4764-139-0x000001E98B4B0000-0x000001E98B632000-memory.dmp

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