nymaim | 17057d67afff5ff9bfc15ab93f6d5e1c2052c35eb8532117795b491e4e8957f9

Analysis

max time kernel
78s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/08/2022, 21:57

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General

Target
file.exe
Size 245KB
Sample220828-1tw69sgce6
SHA256 17057d67afff5ff9bfc15ab93f6d5e1c2052c35eb8532117795b491e4e8957f9
MD5 1b799bb6674daa545d78d587dc6cd1ab
SHA1 22e7c7ff4f6696abb7e6838b65f7da2e6fc9368b
SHA512 b023e49ec968e368865fe3d6d6cb27efc209dd834e2e521741cd85e113e149fa656c2f9fe6ec7b7719fe82800dc6cf858f5f4002d68a2920536659b7b52c7e37
SSDEEP 3072:CrwNVoBgC43whHmgbVmJuta5/t8/UnOxZQE1cfxctZIRetRgZ8prEjWU1Z:y67C43whlOV8ssZQEmfwIYMZYrUWI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

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-1-5-21-1502147629-2175634256-330282290-1000\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 8 IoCs

pid	pid_target	Process	procid_target
1408	1556	WerFault.exe	82
5020	1556	WerFault.exe	82
3896	1556	WerFault.exe	82
1292	1556	WerFault.exe	82
992	1556	WerFault.exe	82
4980	1556	WerFault.exe	82
1576	1556	WerFault.exe	82
3136	1556	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
3520	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 5076	1556	file.exe	109
PID 1556 wrote to memory of 5076	1556	file.exe	109
PID 1556 wrote to memory of 5076	1556	file.exe	109
PID 5076 wrote to memory of 3520	5076	cmd.exe	111
PID 5076 wrote to memory of 3520	5076	cmd.exe	111
PID 5076 wrote to memory of 3520	5076	cmd.exe	111

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:1556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 452
  2⤵
  - Program crash
  PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 772
  2⤵
  - Program crash
  PID:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 804
  2⤵
  - Program crash
  PID:3896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 804
  2⤵
  - Program crash
  PID:1292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 836
  2⤵
  - Program crash
  PID:992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 900
  2⤵
  - Program crash
  PID:4980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 1000
  2⤵
  - Program crash
  PID:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 1280
  2⤵
  - Program crash
  PID:3136
- 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:5076
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1556 -ip 1556
1⤵
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1556 -ip 1556
1⤵
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1556 -ip 1556
1⤵
PID:3044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1556 -ip 1556
1⤵
PID:1136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1556 -ip 1556
1⤵
PID:1116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1556 -ip 1556
1⤵
PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1556 -ip 1556
1⤵
PID:1204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1556 -ip 1556
1⤵
PID:1180

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/1556-132-0x00000000004C7000-0x00000000004EE000-memory.dmp

Download

memory/1556-133-0x00000000008F0000-0x0000000000932000-memory.dmp

Download

memory/1556-134-0x0000000000400000-0x000000000049D000-memory.dmp

Download

memory/1556-136-0x00000000004C7000-0x00000000004EE000-memory.dmp

Download

memory/1556-137-0x0000000000400000-0x000000000049D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads