nymaim | 6bef62653d807b4916c39deb44dcc47e908158a74439903172583c8685cf2077

General

Target

file.exe
Size

357KB
MD5

90da1762f13362256f04cb65a89eef8c
SHA1

9ff737f33233ce5049bd663a190685bd0286c406
SHA256

6bef62653d807b4916c39deb44dcc47e908158a74439903172583c8685cf2077
SHA512

9f084e3e24f782c134464db127af79ad1eec166101bdda5c32565835a92e6ba63b789a56c5218b2c7c7d7c7220850836da7649729c6899b2ba5d44d3667a2192
SSDEEP

6144:Fs2ZQfZusO6BG6GUjvIH6rvmoqU76E0Nniga:FnZnsONuvs6TF74Ni

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

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 10 IoCs

pid	pid_target	Process	procid_target
4816	4800	WerFault.exe	82
1208	4800	WerFault.exe	82
3944	4800	WerFault.exe	82
772	4800	WerFault.exe	82
640	4800	WerFault.exe	82
3028	4800	WerFault.exe	82
4164	4800	WerFault.exe	82
3708	4800	WerFault.exe	82
4820	4800	WerFault.exe	82
4092	4800	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
1880	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 4884	4800	file.exe	105
PID 4800 wrote to memory of 4884	4800	file.exe	105
PID 4800 wrote to memory of 4884	4800	file.exe	105
PID 4884 wrote to memory of 1880	4884	cmd.exe	109
PID 4884 wrote to memory of 1880	4884	cmd.exe	109
PID 4884 wrote to memory of 1880	4884	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 use of WriteProcessMemory
PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 452
  2⤵
  - Program crash
  PID:4816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 764
  2⤵
  - Program crash
  PID:1208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 764
  2⤵
  - Program crash
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 764
  2⤵
  - Program crash
  PID:772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 856
  2⤵
  - Program crash
  PID:640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 928
  2⤵
  - Program crash
  PID:3028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 1008
  2⤵
  - Program crash
  PID:4164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 1032
  2⤵
  - Program crash
  PID:3708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 1176
  2⤵
  - Program crash
  PID:4820
- 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:4884
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 1488
  2⤵
  - Program crash
  PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4800 -ip 4800
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4800 -ip 4800
1⤵
PID:3560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4800 -ip 4800
1⤵
PID:3240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4800 -ip 4800
1⤵
PID:3476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4800 -ip 4800
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4800 -ip 4800
1⤵
PID:3288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4800 -ip 4800
1⤵
PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4800 -ip 4800
1⤵
PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4800 -ip 4800
1⤵
PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4800 -ip 4800
1⤵
PID:3820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4800-132-0x00000000007F9000-0x0000000000820000-memory.dmp

Filesize
156KB

Download
memory/4800-133-0x0000000002190000-0x00000000021D3000-memory.dmp

Filesize
268KB

Download
memory/4800-134-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/4800-137-0x00000000007F9000-0x0000000000820000-memory.dmp

Filesize
156KB

Download
memory/4800-138-0x0000000002190000-0x00000000021D3000-memory.dmp

Filesize
268KB

Download
memory/4800-139-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download

Analysis

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