nymaim | 81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22

General

Target

2f5b19f3196cf8903daa3de2163e56bc.exe
Size

369KB
MD5

2f5b19f3196cf8903daa3de2163e56bc
SHA1

ddff7f0771687bb3632da27c7e46dcd7ef167e2e
SHA256

81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22
SHA512

ba1951fbc6c18d6fe247d2e5269156db8619f483b1d5796b1f084bb92e760cbe9b233e11c688919b3580e8853baede4b3bdb1c848eb23c20afa3a753f927b8d2

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

37.0.8.39

31.210.20.149

212.192.241.16

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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	2f5b19f3196cf8903daa3de2163e56bc.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 9 IoCs

pid	pid_target	Process	procid_target
4060	1132	WerFault.exe	80
2620	1132	WerFault.exe	80
5116	1132	WerFault.exe	80
4496	1132	WerFault.exe	80
4616	1132	WerFault.exe	80
5040	1132	WerFault.exe	80
5084	1132	WerFault.exe	80
3676	1132	WerFault.exe	80
2688	1132	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
4920	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 3408	1132	2f5b19f3196cf8903daa3de2163e56bc.exe	105
PID 1132 wrote to memory of 3408	1132	2f5b19f3196cf8903daa3de2163e56bc.exe	105
PID 1132 wrote to memory of 3408	1132	2f5b19f3196cf8903daa3de2163e56bc.exe	105
PID 3408 wrote to memory of 4920	3408	cmd.exe	109
PID 3408 wrote to memory of 4920	3408	cmd.exe	109
PID 3408 wrote to memory of 4920	3408	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe
"C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 452
  2⤵
  - Program crash
  PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 484
  2⤵
  - Program crash
  PID:2620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 784
  2⤵
  - Program crash
  PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 784
  2⤵
  - Program crash
  PID:4496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 484
  2⤵
  - Program crash
  PID:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 844
  2⤵
  - Program crash
  PID:5040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 848
  2⤵
  - Program crash
  PID:5084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 1360
  2⤵
  - Program crash
  PID:3676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "2f5b19f3196cf8903daa3de2163e56bc.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "2f5b19f3196cf8903daa3de2163e56bc.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 1328
  2⤵
  - Program crash
  PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1132 -ip 1132
1⤵
PID:2316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1132 -ip 1132
1⤵
PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1132 -ip 1132
1⤵
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1132 -ip 1132
1⤵
PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1132 -ip 1132
1⤵
PID:3536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 1132 -ip 1132
1⤵
PID:1308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1132 -ip 1132
1⤵
PID:3512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1132 -ip 1132
1⤵
PID:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1132 -ip 1132
1⤵
PID:980

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/1132-130-0x0000000000E1E000-0x0000000000E44000-memory.dmp

Filesize
152KB

Download
memory/1132-131-0x00000000028A0000-0x00000000028DF000-memory.dmp

Filesize
252KB

Download
memory/1132-132-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download
memory/1132-133-0x0000000000E1E000-0x0000000000E44000-memory.dmp

Filesize
152KB

Download
memory/1132-134-0x00000000028A0000-0x00000000028DF000-memory.dmp

Filesize
252KB

Download
memory/1132-135-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download
memory/1132-138-0x0000000000E1E000-0x0000000000E44000-memory.dmp

Filesize
152KB

Download
memory/1132-139-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download

Analysis

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