nymaim | 911d9e4d866dd40977be27cf581a457662b752d2121af307e6fce83cabc6b6f1

Analysis

max time kernel
102s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/09/2022, 11:12

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General

Target
file.exe
Size 406KB
Sample220927-nat7caeeaj
SHA256 911d9e4d866dd40977be27cf581a457662b752d2121af307e6fce83cabc6b6f1
MD5 dd7b89d15b85c9e180691169abb013c9
SHA1 abc22ddffbf788f4fd932af0af0c8a9d6967a007
SHA512 5c33add21f65d2ad3ebc984850d046a4dc286019a5faeae17ca6d51f4c0871330fc9b5660ed2dcde327c3d9d69daf6ac1e577526479c67f05c209d8a2a5b4f00
SSDEEP 6144:g+5ZnPNUIoK0o14q9DOezc6ncyuIsvlwN90FQnigabwVf:g+nPNUItAEc9IsdhFQi
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
2808	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-1-5-21-2629973501-4017243118-3254762364-1000\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 11 IoCs

pid	pid_target	Process	procid_target
3112	3196	WerFault.exe	76
932	3196	WerFault.exe	76
1336	3196	WerFault.exe	76
4720	3196	WerFault.exe	76
2364	3196	WerFault.exe	76
3492	3196	WerFault.exe	76
4328	3196	WerFault.exe	76
4056	3196	WerFault.exe	76
4552	3196	WerFault.exe	76
4712	3196	WerFault.exe	76
3544	3196	WerFault.exe	76

Kills process with taskkill 1 IoCs

evasion

pid	Process
4372	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	2808	Cleaner.exe
Token: SeDebugPrivilege	4372	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3196 wrote to memory of 3448	3196	file.exe	96
PID 3196 wrote to memory of 3448	3196	file.exe	96
PID 3196 wrote to memory of 3448	3196	file.exe	96
PID 3448 wrote to memory of 2808	3448	cmd.exe	98
PID 3448 wrote to memory of 2808	3448	cmd.exe	98
PID 3196 wrote to memory of 5040	3196	file.exe	112
PID 3196 wrote to memory of 5040	3196	file.exe	112
PID 3196 wrote to memory of 5040	3196	file.exe	112
PID 5040 wrote to memory of 4372	5040	cmd.exe	116
PID 5040 wrote to memory of 4372	5040	cmd.exe	116
PID 5040 wrote to memory of 4372	5040	cmd.exe	116

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 456
  2⤵
  - Program crash
  PID:3112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 772
  2⤵
  - Program crash
  PID:932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 764
  2⤵
  - Program crash
  PID:1336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 764
  2⤵
  - Program crash
  PID:4720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 836
  2⤵
  - Program crash
  PID:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 928
  2⤵
  - Program crash
  PID:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1000
  2⤵
  - Program crash
  PID:4328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1320
  2⤵
  - Program crash
  PID:4056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1412
  2⤵
  - Program crash
  PID:4552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 1772
  2⤵
  - Program crash
  PID:4712
- 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:5040
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 512
  2⤵
  - Program crash
  PID:3544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3196 -ip 3196
1⤵
PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3196 -ip 3196
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3196 -ip 3196
1⤵
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3196 -ip 3196
1⤵
PID:1548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:2612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3196 -ip 3196
1⤵
PID:3040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:4796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3196 -ip 3196
1⤵
PID:1920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3196 -ip 3196
1⤵
PID:1284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3196 -ip 3196
1⤵
PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3196 -ip 3196
1⤵
PID:4868

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\cney3vtZhiuaPED\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\cney3vtZhiuaPED\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\cney3vtZhiuaPED\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/2808-142-0x00007FFA05D10000-0x00007FFA067D1000-memory.dmp

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memory/2808-145-0x00007FFA05D10000-0x00007FFA067D1000-memory.dmp

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memory/2808-141-0x000001D523340000-0x000001D523382000-memory.dmp

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memory/2808-139-0x000001D521510000-0x000001D521692000-memory.dmp

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memory/3196-133-0x00000000005D0000-0x000000000060F000-memory.dmp

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memory/3196-134-0x0000000000400000-0x000000000046A000-memory.dmp

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memory/3196-132-0x000000000062F000-0x0000000000655000-memory.dmp

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memory/3196-143-0x000000000062F000-0x0000000000655000-memory.dmp

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memory/3196-144-0x0000000000400000-0x000000000046A000-memory.dmp

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

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memory/3196-152-0x0000000000400000-0x000000000046A000-memory.dmp

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