nymaim | 8c69f995e6aa47a25048993654a5318787a009891c5687a35859a1d7abccd487

Analysis

max time kernel
91s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/12/2022, 09:06

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General

Target
9720e238ab67f1f82fde27c3347b81d3.exe
Size 316KB
Sample221227-k2qrfshg6v
SHA256 8c69f995e6aa47a25048993654a5318787a009891c5687a35859a1d7abccd487
MD5 9720e238ab67f1f82fde27c3347b81d3
SHA1 79cce6b6a9d95992920b0585aea2af120d321c9a
SHA512 836db2aa9209416b89999fb842037498cc7acd84e9506f075d246a2b3072c3c32cf078c31c416bcc3da4608a41fc1553e3506716b0c4565b5fe457bfbe131d14
SSDEEP 6144:5LvcnTbtMEnIrhkfHXq1sAysPD/2Kbf/dsfHff+Vl7l:5TcnTbtMwI9ks5PD/2K5sfOX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
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	9720e238ab67f1f82fde27c3347b81d3.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 7 IoCs

pid	pid_target	Process	procid_target
4756	4772	WerFault.exe	80
4008	4772	WerFault.exe	80
2732	4772	WerFault.exe	80
3708	4772	WerFault.exe	80
4916	4772	WerFault.exe	80
4864	4772	WerFault.exe	80
3096	4772	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
1512	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 4648	4772	9720e238ab67f1f82fde27c3347b81d3.exe	94
PID 4772 wrote to memory of 4648	4772	9720e238ab67f1f82fde27c3347b81d3.exe	94
PID 4772 wrote to memory of 4648	4772	9720e238ab67f1f82fde27c3347b81d3.exe	94
PID 4648 wrote to memory of 1512	4648	cmd.exe	97
PID 4648 wrote to memory of 1512	4648	cmd.exe	97
PID 4648 wrote to memory of 1512	4648	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\9720e238ab67f1f82fde27c3347b81d3.exe
"C:\Users\Admin\AppData\Local\Temp\9720e238ab67f1f82fde27c3347b81d3.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 684
  2⤵
  - Program crash
  PID:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 772
  2⤵
  - Program crash
  PID:4008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 924
  2⤵
  - Program crash
  PID:2732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 944
  2⤵
  - Program crash
  PID:3708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 960
  2⤵
  - Program crash
  PID:4916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 732
  2⤵
  - Program crash
  PID:4864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9720e238ab67f1f82fde27c3347b81d3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9720e238ab67f1f82fde27c3347b81d3.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4648
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9720e238ab67f1f82fde27c3347b81d3.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1064
  2⤵
  - Program crash
  PID:3096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4772 -ip 4772
1⤵
PID:3192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4772 -ip 4772
1⤵
PID:4388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4772 -ip 4772
1⤵
PID:1148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4772 -ip 4772
1⤵
PID:2608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4772 -ip 4772
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 4772 -ip 4772
1⤵
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4772 -ip 4772
1⤵
PID:1988

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/4772-132-0x000000000053E000-0x0000000000565000-memory.dmp

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memory/4772-133-0x00000000021B0000-0x00000000021F0000-memory.dmp

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memory/4772-134-0x0000000000400000-0x0000000000473000-memory.dmp

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memory/4772-137-0x000000000053E000-0x0000000000565000-memory.dmp

Download

memory/4772-138-0x0000000000400000-0x0000000000473000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads