nymaim | e43527558b3c86ee60badbfc76fe825136abd935181a71f753d3fa8288e3d04d

Analysis

max time kernel
143s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
10/12/2022, 11:13

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General

Target
b6d7196e1f35cb27c415e70aff17ff77.exe
Size 399KB
Sample221210-nbehaafe22
SHA256 e43527558b3c86ee60badbfc76fe825136abd935181a71f753d3fa8288e3d04d
MD5 b6d7196e1f35cb27c415e70aff17ff77
SHA1 74625a04a2e031cda81ba99ea82f4b46cd6f7e72
SHA512 6ee878994ece9aef146133db9a0ea7cfd395a0e40e63334b0a8c0f431746ad7347a9b59a8b0b9a02fbd9639ac65197c32087c6ee821753418964eec8842d9976
SSDEEP 6144:m0jPd70L0yX8QBREVuyAYYWP9o45aB+p2SrNJtAm0zxDYG0ZrrMC7C9:pjPeAyX8QBRauhBy9ovYpHS/uRQEC9
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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b6d7196e1f35cb27c415e70aff17ff77.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
496	1780	WerFault.exe	81
3988	1780	WerFault.exe	81
116	1780	WerFault.exe	81
1988	1780	WerFault.exe	81
4744	1780	WerFault.exe	81
1236	1780	WerFault.exe	81
4720	1780	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
3160	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3160	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 4564	1780	b6d7196e1f35cb27c415e70aff17ff77.exe	94
PID 1780 wrote to memory of 4564	1780	b6d7196e1f35cb27c415e70aff17ff77.exe	94
PID 1780 wrote to memory of 4564	1780	b6d7196e1f35cb27c415e70aff17ff77.exe	94
PID 4564 wrote to memory of 3160	4564	cmd.exe	98
PID 4564 wrote to memory of 3160	4564	cmd.exe	98
PID 4564 wrote to memory of 3160	4564	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\b6d7196e1f35cb27c415e70aff17ff77.exe
"C:\Users\Admin\AppData\Local\Temp\b6d7196e1f35cb27c415e70aff17ff77.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 728
  2⤵
  - Program crash
  PID:496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 788
  2⤵
  - Program crash
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 924
  2⤵
  - Program crash
  PID:116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 796
  2⤵
  - Program crash
  PID:1988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 796
  2⤵
  - Program crash
  PID:4744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 924
  2⤵
  - Program crash
  PID:1236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b6d7196e1f35cb27c415e70aff17ff77.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b6d7196e1f35cb27c415e70aff17ff77.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4564
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b6d7196e1f35cb27c415e70aff17ff77.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 1104
  2⤵
  - Program crash
  PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1780 -ip 1780
1⤵
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 388 -p 1780 -ip 1780
1⤵
PID:3240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1780 -ip 1780
1⤵
PID:312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1780 -ip 1780
1⤵
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1780 -ip 1780
1⤵
PID:3832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1780 -ip 1780
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 1780 -ip 1780
1⤵
PID:3124

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/1780-132-0x000000000050E000-0x0000000000535000-memory.dmp

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memory/1780-134-0x0000000000400000-0x0000000000469000-memory.dmp

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memory/1780-133-0x0000000002210000-0x0000000002250000-memory.dmp

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memory/1780-137-0x000000000050E000-0x0000000000535000-memory.dmp

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memory/1780-138-0x0000000000400000-0x0000000000469000-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