nymaim | 8bd2c018f4b7e8991317131ae43241037f3060a441ce75cfbec1af1b89fd4e42

Analysis

max time kernel
75s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
16/09/2022, 05:33

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General

Target

file.exe
Size

357KB
MD5

667a568749310a12d5ba992fd0159ba9
SHA1

be6741802e61ed51da5ff8463cd2f56dca852b05
SHA256

8bd2c018f4b7e8991317131ae43241037f3060a441ce75cfbec1af1b89fd4e42
SHA512

25f129accf4b616adda8c11b35e93ac1907df812037b65c9eac1087510700e9f3cbd03df21c3dbf40418402b5b425c01ab64cd2cae217e30cbf949de8448c945
SSDEEP

6144:itkDe1SCJrdrQxFwDRCkEphjClCMTVBt18DBnG0rYnigan:iyKPtQx2DRl4hmlCYf81kiP

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
1020	2264	WerFault.exe	80
2136	2264	WerFault.exe	80
2472	2264	WerFault.exe	80
4480	2264	WerFault.exe	80
1500	2264	WerFault.exe	80
608	2264	WerFault.exe	80
2756	2264	WerFault.exe	80
3964	2264	WerFault.exe	80
3804	2264	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3792	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3792	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2016	2264	file.exe	102
PID 2264 wrote to memory of 2016	2264	file.exe	102
PID 2264 wrote to memory of 2016	2264	file.exe	102
PID 2016 wrote to memory of 3792	2016	cmd.exe	106
PID 2016 wrote to memory of 3792	2016	cmd.exe	106
PID 2016 wrote to memory of 3792	2016	cmd.exe	106

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:2264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 456
  2⤵
  - Program crash
  PID:1020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 772
  2⤵
  - Program crash
  PID:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 804
  2⤵
  - Program crash
  PID:2472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 804
  2⤵
  - Program crash
  PID:4480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 840
  2⤵
  - Program crash
  PID:1500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 928
  2⤵
  - Program crash
  PID:608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 932
  2⤵
  - Program crash
  PID:2756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 1356
  2⤵
  - Program crash
  PID:3964
- 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:2016
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 512
  2⤵
  - Program crash
  PID:3804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2264 -ip 2264
1⤵
PID:1032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2264 -ip 2264
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2264 -ip 2264
1⤵
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2264 -ip 2264
1⤵
PID:740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2264 -ip 2264
1⤵
PID:1480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2264 -ip 2264
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2264 -ip 2264
1⤵
PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2264 -ip 2264
1⤵
PID:176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 2264 -ip 2264
1⤵
PID:2556

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/2264-132-0x00000000006E9000-0x0000000000710000-memory.dmp

Filesize
156KB

Download
memory/2264-133-0x00000000005F0000-0x0000000000633000-memory.dmp

Filesize
268KB

Download
memory/2264-134-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2264-137-0x00000000006E9000-0x0000000000710000-memory.dmp

Filesize
156KB

Download
memory/2264-138-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download