nymaim | 9f62eb535bbdba09dc711e2228827ab143c482056a70e37256c80c1e76342955

Analysis

max time kernel
91s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
17/09/2022, 08:49

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General

Target

file.exe
Size

382KB
MD5

8c1859fda00e8653b4b511b178f61bc7
SHA1

44442c40a4183e1f4b8e84320e7aa76b7f3111c1
SHA256

9f62eb535bbdba09dc711e2228827ab143c482056a70e37256c80c1e76342955
SHA512

a6b9884463f2f3dae9d5572c45db7adc7d888c467838e134d36864195540bfa71f4aaf9ea43b5e8f0df3ce979a5332d5c2adbb18cd0df02f5448590af66cb5e3
SSDEEP

6144:T5HfL0cKFJREmXbV1TWqLpW8cNZJVSac5p8sxA4rrGU0XgMnigabwVf:TVfQc0Jb1TWq9YZfc5ptxzOQMi

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

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-1-5-21-2295526160-1155304984-640977766-1000\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
4300	4772	WerFault.exe	80
3636	4772	WerFault.exe	80
4024	4772	WerFault.exe	80
4240	4772	WerFault.exe	80
1864	4772	WerFault.exe	80
748	4772	WerFault.exe	80
4756	4772	WerFault.exe	80
3776	4772	WerFault.exe	80
4020	4772	WerFault.exe	80
2968	4772	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
4472	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4472	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 1252	4772	file.exe	105
PID 4772 wrote to memory of 1252	4772	file.exe	105
PID 4772 wrote to memory of 1252	4772	file.exe	105
PID 1252 wrote to memory of 4472	1252	cmd.exe	108
PID 1252 wrote to memory of 4472	1252	cmd.exe	108
PID 1252 wrote to memory of 4472	1252	cmd.exe	108

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:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 464
  2⤵
  - Program crash
  PID:4300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 764
  2⤵
  - Program crash
  PID:3636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 784
  2⤵
  - Program crash
  PID:4024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 784
  2⤵
  - Program crash
  PID:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 856
  2⤵
  - Program crash
  PID:1864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 776
  2⤵
  - Program crash
  PID:748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 804
  2⤵
  - Program crash
  PID:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1032
  2⤵
  - Program crash
  PID:3776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1368
  2⤵
  - Program crash
  PID:4020
- 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:1252
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1392
  2⤵
  - Program crash
  PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4772 -ip 4772
1⤵
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4772 -ip 4772
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4772 -ip 4772
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4772 -ip 4772
1⤵
PID:2484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4772 -ip 4772
1⤵
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4772 -ip 4772
1⤵
PID:3200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4772 -ip 4772
1⤵
PID:1008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4772 -ip 4772
1⤵
PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4772 -ip 4772
1⤵
PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4772 -ip 4772
1⤵
PID:3760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4772-132-0x000000000049D000-0x00000000004C4000-memory.dmp

Filesize
156KB

Download
memory/4772-133-0x00000000021A0000-0x00000000021E2000-memory.dmp

Filesize
264KB

Download
memory/4772-134-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/4772-137-0x000000000049D000-0x00000000004C4000-memory.dmp

Filesize
156KB

Download
memory/4772-138-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download