nymaim | 0821eb16ab4a47e8ca876c05dbccab3af8fce9e592b4394f0282a2ee26564945

Analysis

max time kernel
122s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 11:16

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General

Target
file.exe
Size 370KB
Sample220919-nc69paech2
SHA256 0821eb16ab4a47e8ca876c05dbccab3af8fce9e592b4394f0282a2ee26564945
MD5 13694f6be25e84ba63827cc84fe7f5b1
SHA1 de66072919e2f3341a73e55ad0a7edc1527cb1e2
SHA512 2e2b5f8040ac87efac3f03ccba3bd7969fa7de976d5cf2a6d06918459ec6b3af8636d596b3ca2d51f4fe47f6843cf499ea4ad49f37649cb28c1f2d9c86f4f81a
SSDEEP 6144:9JkePALPb5apEn4ksE206GKp0sBY5itiP01Y2igavwVfB:9Jke4Lb5ap2seKp0s4i31S
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-929662420-1054238289-2961194603-1000\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 9 IoCs

pid	pid_target	Process	procid_target
4604	3420	WerFault.exe	82
380	3420	WerFault.exe	82
4768	3420	WerFault.exe	82
4412	3420	WerFault.exe	82
4292	3420	WerFault.exe	82
3560	3420	WerFault.exe	82
4932	3420	WerFault.exe	82
3756	3420	WerFault.exe	82
4660	3420	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
4540	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4540	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 3836	3420	file.exe	104
PID 3420 wrote to memory of 3836	3420	file.exe	104
PID 3420 wrote to memory of 3836	3420	file.exe	104
PID 3836 wrote to memory of 4540	3836	cmd.exe	108
PID 3836 wrote to memory of 4540	3836	cmd.exe	108
PID 3836 wrote to memory of 4540	3836	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:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 452
  2⤵
  - Program crash
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 764
  2⤵
  - Program crash
  PID:380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 772
  2⤵
  - Program crash
  PID:4768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 772
  2⤵
  - Program crash
  PID:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 844
  2⤵
  - Program crash
  PID:4292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 808
  2⤵
  - Program crash
  PID:3560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 940
  2⤵
  - Program crash
  PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1360
  2⤵
  - Program crash
  PID:3756
- 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:3836
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 492
  2⤵
  - Program crash
  PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3420 -ip 3420
1⤵
PID:2500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3420 -ip 3420
1⤵
PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3420 -ip 3420
1⤵
PID:3544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3420 -ip 3420
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3420 -ip 3420
1⤵
PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3420 -ip 3420
1⤵
PID:2572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3420 -ip 3420
1⤵
PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3420 -ip 3420
1⤵
PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3420 -ip 3420
1⤵
PID:2524

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/3420-132-0x0000000000629000-0x0000000000650000-memory.dmp

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memory/3420-133-0x00000000005C0000-0x0000000000602000-memory.dmp

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memory/3420-134-0x0000000000400000-0x0000000000461000-memory.dmp

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memory/3420-137-0x0000000000629000-0x0000000000650000-memory.dmp

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memory/3420-138-0x0000000000400000-0x0000000000461000-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