nymaim | 911d9e4d866dd40977be27cf581a457662b752d2121af307e6fce83cabc6b6f1

General

Target

file.exe
Size

406KB
MD5

dd7b89d15b85c9e180691169abb013c9
SHA1

abc22ddffbf788f4fd932af0af0c8a9d6967a007
SHA256

911d9e4d866dd40977be27cf581a457662b752d2121af307e6fce83cabc6b6f1
SHA512

5c33add21f65d2ad3ebc984850d046a4dc286019a5faeae17ca6d51f4c0871330fc9b5660ed2dcde327c3d9d69daf6ac1e577526479c67f05c209d8a2a5b4f00
SSDEEP

6144:g+5ZnPNUIoK0o14q9DOezc6ncyuIsvlwN90FQnigabwVf:g+nPNUItAEc9IsdhFQi

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

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

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
C:\Users\Admin\AppData\Local\Temp\cney3vtZhiuaPED\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
memory/2808-142-0x00007FFA05D10000-0x00007FFA067D1000-memory.dmp

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
264KB

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

Filesize
1.5MB

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

Filesize
252KB

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

Filesize
424KB

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

Filesize
152KB

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

Filesize
152KB

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

Filesize
424KB

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

Filesize
108KB

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

Filesize
424KB

Download

Analysis

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