nymaim | 449b2c20aa95bb6260ceb453a1fdc5ad39112494cbb3602cea9caf170b63248c

Analysis

max time kernel
104s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2022, 01:08

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General

Target
file.exe
Size 231KB
Sample220930-bg8bbsccd6
SHA256 449b2c20aa95bb6260ceb453a1fdc5ad39112494cbb3602cea9caf170b63248c
MD5 6e6dfe6161b9694affceb7ec721b249a
SHA1 d2c38f70fb634dc7a749e0911ca1a399d4afcbc7
SHA512 79bdabaf52122527493849ca37a86d0bdd8f32645ec1cf9ec5a5872f160027248b92537becf644909acb4630d235b621f02abeed65ee38938f004e5d0cfdaa18
SSDEEP 6144:ZA02U/DGznm1kuGGRovHMACmtU5aAUOQFgxO78yz:ZA02U/4meERoEACUs4gE4yz
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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4132	Cleaner.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
4040	2432	WerFault.exe	83
4372	2432	WerFault.exe	83
4276	2432	WerFault.exe	83
3672	2432	WerFault.exe	83
1996	2432	WerFault.exe	83
4032	2432	WerFault.exe	83
1700	2432	WerFault.exe	83
1624	2432	WerFault.exe	83
652	2432	WerFault.exe	83
2748	2432	WerFault.exe	83
3524	2432	WerFault.exe	83
4348	2432	WerFault.exe	83

Kills process with taskkill 1 IoCs

evasion

pid	Process
4800	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2432	file.exe
2432	file.exe
2432	file.exe
2432	file.exe
2432	file.exe
2432	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2432	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4132	Cleaner.exe
Token: SeDebugPrivilege	4800	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2028	2432	file.exe	109
PID 2432 wrote to memory of 2028	2432	file.exe	109
PID 2432 wrote to memory of 2028	2432	file.exe	109
PID 2028 wrote to memory of 4132	2028	cmd.exe	111
PID 2028 wrote to memory of 4132	2028	cmd.exe	111
PID 2432 wrote to memory of 2524	2432	file.exe	127
PID 2432 wrote to memory of 2524	2432	file.exe	127
PID 2432 wrote to memory of 2524	2432	file.exe	127
PID 2524 wrote to memory of 4800	2524	cmd.exe	131
PID 2524 wrote to memory of 4800	2524	cmd.exe	131
PID 2524 wrote to memory of 4800	2524	cmd.exe	131

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 behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 452
  2⤵
  - Program crash
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 716
  2⤵
  - Program crash
  PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 772
  2⤵
  - Program crash
  PID:4276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 796
  2⤵
  - Program crash
  PID:3672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 772
  2⤵
  - Program crash
  PID:1996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 948
  2⤵
  - Program crash
  PID:4032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 948
  2⤵
  - Program crash
  PID:1700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1048
  2⤵
  - Program crash
  PID:1624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1384
  2⤵
  - Program crash
  PID:652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1420
  2⤵
  - Program crash
  PID:2748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1420
  2⤵
  - Program crash
  PID:3524
- 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:2524
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1660
  2⤵
  - Program crash
  PID:4348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2432 -ip 2432
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2432 -ip 2432
1⤵
PID:824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2432 -ip 2432
1⤵
PID:3560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2432 -ip 2432
1⤵
PID:4932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2432 -ip 2432
1⤵
PID:2936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2432 -ip 2432
1⤵
PID:1492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2432 -ip 2432
1⤵
PID:3460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2432 -ip 2432
1⤵
PID:1268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 2432 -ip 2432
1⤵
PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2432 -ip 2432
1⤵
PID:4436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2432 -ip 2432
1⤵
PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2432 -ip 2432
1⤵
PID:1492

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\QozaA40z3Ui\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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memory/2432-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2432-133-0x00000000021C0000-0x00000000021FF000-memory.dmp

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memory/2432-138-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2432-154-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2432-135-0x0000000000609000-0x0000000000630000-memory.dmp

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memory/2432-134-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2432-153-0x0000000000609000-0x0000000000630000-memory.dmp

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memory/2432-136-0x00000000021C0000-0x00000000021FF000-memory.dmp

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memory/2432-132-0x0000000000609000-0x0000000000630000-memory.dmp

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memory/4132-145-0x00007FFA976A0000-0x00007FFA98161000-memory.dmp

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memory/4132-146-0x00007FFA976A0000-0x00007FFA98161000-memory.dmp

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memory/4132-144-0x00000225468B0000-0x00000225468F2000-memory.dmp

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memory/4132-142-0x0000022544A80000-0x0000022544BD8000-memory.dmp

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