nymaim | cc046feb563db2c4bae91e1c39374268dd67dbe61970dfc5ba1256c8a954eec5

Analysis

max time kernel
72s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 00:53

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General

Target
file.exe
Size 397KB
Sample221007-a8mchabbg5
SHA256 cc046feb563db2c4bae91e1c39374268dd67dbe61970dfc5ba1256c8a954eec5
MD5 eb4541b4f3a0ea0f5f7f134a445e1d49
SHA1 2bc63651b4c340e4f94f2e4cd07ad0d4554782a9
SHA512 cbec731dea05d4811df64de4582b5ccc38cc51c8711197f86aa15e5c04d44b9b02e86b5c39ef49786e367cea9ff1139a159d1edfec93b02cc55ea4074d76c33e
SSDEEP 6144:MJsIEMuKVtcFEIheI6FXRvawwfP8NRwG+apGFuzbgwulKliwVfU:M2fMuwwhERv7YpaWunna5
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

Executes dropped EXE 1 IoCs

pid	Process
1604	pzLAV4F5jv6jaK.exe

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	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 8 IoCs

pid	pid_target	Process	procid_target
4668	3268	WerFault.exe	80
4940	3268	WerFault.exe	80
4784	3268	WerFault.exe	80
1068	3268	WerFault.exe	80
2076	3268	WerFault.exe	80
3844	3268	WerFault.exe	80
3680	3268	WerFault.exe	80
2668	3268	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3084	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3268	file.exe
3268	file.exe
3268	file.exe
3268	file.exe
3268	file.exe
3268	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3084	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3268 wrote to memory of 1604	3268	file.exe	96
PID 3268 wrote to memory of 1604	3268	file.exe	96
PID 3268 wrote to memory of 1604	3268	file.exe	96
PID 3268 wrote to memory of 1692	3268	file.exe	106
PID 3268 wrote to memory of 1692	3268	file.exe	106
PID 3268 wrote to memory of 1692	3268	file.exe	106
PID 1692 wrote to memory of 3084	1692	cmd.exe	108
PID 1692 wrote to memory of 3084	1692	cmd.exe	108
PID 1692 wrote to memory of 3084	1692	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 behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 460
  2⤵
  - Program crash
  PID:4668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 772
  2⤵
  - Program crash
  PID:4940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 764
  2⤵
  - Program crash
  PID:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 804
  2⤵
  - Program crash
  PID:1068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 812
  2⤵
  - Program crash
  PID:2076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 928
  2⤵
  - Program crash
  PID:3844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 1004
  2⤵
  - Program crash
  PID:3680
- C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\pzLAV4F5jv6jaK.exe
  2⤵
  - Executes dropped EXE
  PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 1364
  2⤵
  - Program crash
  PID:2668
- 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:1692
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3268 -ip 3268
1⤵
PID:4556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3268 -ip 3268
1⤵
PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3268 -ip 3268
1⤵
PID:1392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3268 -ip 3268
1⤵
PID:1376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3268 -ip 3268
1⤵
PID:3560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3268 -ip 3268
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3268 -ip 3268
1⤵
PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3268 -ip 3268
1⤵
PID:1864

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

pzLAV4F5jv6jaK.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\pzLAV4F5jv6jaK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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pzLAV4F5jv6jaK.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\pzLAV4F5jv6jaK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/3268-137-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/3268-135-0x000000000063D000-0x000000000066E000-memory.dmp

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memory/3268-141-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3268-145-0x000000000063D000-0x000000000066E000-memory.dmp

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memory/3268-146-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/3268-136-0x0000000002170000-0x00000000021C3000-memory.dmp

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memory/3268-148-0x000000000063D000-0x000000000066E000-memory.dmp

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memory/3268-149-0x0000000000400000-0x00000000004B0000-memory.dmp

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