nymaim | e2ab5bc1bb8454439c16ea54ce796056a0b77583bc167e77d8c054b7e4028dcf

Analysis

max time kernel
149s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 10:01

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General

Target
file.exe
Size 370KB
Sample220919-l17t1sffdn
SHA256 e2ab5bc1bb8454439c16ea54ce796056a0b77583bc167e77d8c054b7e4028dcf
MD5 1dd2a0bb7f12a91adac3afab8ca0c382
SHA1 4a2585ed546ed56039d262a18acdbadd01b7a1a5
SHA512 57fae2e76f3e4b8468ac795ff46b84c74c46bd46b7ba7023d86b32911bfd63e86fb78dd8e71d7d312b567c4b311eda5c8c2e0f210b830a0365890ac2b65c3b69
SSDEEP 6144:dhapFEdLaQp2+8jL07KUhoBosH57/0AfytSigavwVf9:dhapFGGQpFsWse0ytX
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-1-5-21-2629973501-4017243118-3254762364-1000\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
3060	4544	WerFault.exe	80
4844	4544	WerFault.exe	80
4820	4544	WerFault.exe	80
2244	4544	WerFault.exe	80
712	4544	WerFault.exe	80
4256	4544	WerFault.exe	80
424	4544	WerFault.exe	80
2812	4544	WerFault.exe	80
1800	4544	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
1796	taskkill.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4544	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 3200	4544	file.exe	105
PID 4544 wrote to memory of 3200	4544	file.exe	105
PID 4544 wrote to memory of 3200	4544	file.exe	105
PID 3200 wrote to memory of 1796	3200	cmd.exe	109
PID 3200 wrote to memory of 1796	3200	cmd.exe	109
PID 3200 wrote to memory of 1796	3200	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 452
  2⤵
  - Program crash
  PID:3060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 716
  2⤵
  - Program crash
  PID:4844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 772
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 772
  2⤵
  - Program crash
  PID:2244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 792
  2⤵
  - Program crash
  PID:712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 904
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 908
  2⤵
  - Program crash
  PID:424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 1360
  2⤵
  - Program crash
  PID:2812
- 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:3200
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 1316
  2⤵
  - Program crash
  PID:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4544 -ip 4544
1⤵
PID:956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4544 -ip 4544
1⤵
PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4544 -ip 4544
1⤵
PID:4896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4544 -ip 4544
1⤵
PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4544 -ip 4544
1⤵
PID:3988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4544 -ip 4544
1⤵
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 4544 -ip 4544
1⤵
PID:2536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4544 -ip 4544
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 4544 -ip 4544
1⤵
PID:2432

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/4544-132-0x0000000000689000-0x00000000006B0000-memory.dmp

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memory/4544-133-0x00000000005D0000-0x0000000000612000-memory.dmp

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memory/4544-134-0x0000000000400000-0x0000000000461000-memory.dmp

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memory/4544-135-0x0000000000689000-0x00000000006B0000-memory.dmp

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memory/4544-136-0x0000000000400000-0x0000000000461000-memory.dmp

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memory/4544-139-0x0000000000689000-0x00000000006B0000-memory.dmp

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memory/4544-140-0x0000000000400000-0x0000000000461000-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