nymaim | 30bb0e3893bd496f910db1ef709cf766e1277e0b097363798acd32e2a13fb92d

General

Target

1909dc145d81df639d4ad06a8b0b9933.exe
Size

372KB
MD5

1909dc145d81df639d4ad06a8b0b9933
SHA1

6021d97bd1b948cd072aa02a946999519225369f
SHA256

30bb0e3893bd496f910db1ef709cf766e1277e0b097363798acd32e2a13fb92d
SHA512

df35908ae1e731df25c6764f4d23da0f53396d40951d2ef96e64f3e94f0dea791cc97187473a943326055e612d1e489eceb0898282ee8f49c290f2a99e1cde06

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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	1909dc145d81df639d4ad06a8b0b9933.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 6 IoCs

pid	pid_target	Process	procid_target
524	4548	WerFault.exe	76
2808	4548	WerFault.exe	76
4804	4548	WerFault.exe	76
1400	4548	WerFault.exe	76
1528	4548	WerFault.exe	76
3936	4548	WerFault.exe	76

Kills process with taskkill 1 IoCs

evasion

pid	Process
3568	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 2424	4548	1909dc145d81df639d4ad06a8b0b9933.exe	90
PID 4548 wrote to memory of 2424	4548	1909dc145d81df639d4ad06a8b0b9933.exe	90
PID 4548 wrote to memory of 2424	4548	1909dc145d81df639d4ad06a8b0b9933.exe	90
PID 2424 wrote to memory of 3568	2424	cmd.exe	92
PID 2424 wrote to memory of 3568	2424	cmd.exe	92
PID 2424 wrote to memory of 3568	2424	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\1909dc145d81df639d4ad06a8b0b9933.exe
"C:\Users\Admin\AppData\Local\Temp\1909dc145d81df639d4ad06a8b0b9933.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 736
  2⤵
  - Program crash
  PID:524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 736
  2⤵
  - Program crash
  PID:2808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 736
  2⤵
  - Program crash
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 932
  2⤵
  - Program crash
  PID:1400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 772
  2⤵
  - Program crash
  PID:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 944
  2⤵
  - Program crash
  PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "1909dc145d81df639d4ad06a8b0b9933.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1909dc145d81df639d4ad06a8b0b9933.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "1909dc145d81df639d4ad06a8b0b9933.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4548 -ip 4548
1⤵
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4548 -ip 4548
1⤵
PID:1832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4548 -ip 4548
1⤵
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4548 -ip 4548
1⤵
PID:1864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4548 -ip 4548
1⤵
PID:1348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4548 -ip 4548
1⤵
PID:396

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/4548-130-0x0000000000BA8000-0x0000000000BCE000-memory.dmp

Filesize
152KB

Download
memory/4548-131-0x0000000002880000-0x00000000028BF000-memory.dmp

Filesize
252KB

Download
memory/4548-132-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download
memory/4548-134-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download

Analysis

Sharing