nymaim | 6cfc0bf3cd583ac6731e8d57d859ab67944a79afbd7ffc69f3cc033b605230ae

Analysis

max time kernel
103s
max time network
146s
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, 00:03

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General

Target
file.exe
Size 230KB
Sample220930-ab2e6adban
SHA256 6cfc0bf3cd583ac6731e8d57d859ab67944a79afbd7ffc69f3cc033b605230ae
MD5 1388a2a41105db29af1fa61faa8eb86d
SHA1 ab13008e73346144283681e4414bbda1832309fe
SHA512 fa833dedf24f79f30c17b421f986026b9b964d76744a55be9f2ae2083f7b1aa66bfa315ba8961d597f49e8ae0b374883aa3d1b93f2a22f61d6a49eb182ef4bcb
SSDEEP 6144:ZQUtiTVqR9tqy2qHrTvdsRvLBvJfiec0HX/z0oD:ZQUt0qRFVHHvuRHfiec0vzPD
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
2984	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
3128	2228	WerFault.exe	81
2820	2228	WerFault.exe	81
2584	2228	WerFault.exe	81
4252	2228	WerFault.exe	81
912	2228	WerFault.exe	81
2520	2228	WerFault.exe	81
4404	2228	WerFault.exe	81
2420	2228	WerFault.exe	81
1828	2228	WerFault.exe	81
1016	2228	WerFault.exe	81
3804	2228	WerFault.exe	81
4580	2228	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
4524	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2228	file.exe
2228	file.exe
2228	file.exe
2228	file.exe
2228	file.exe
2228	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2228	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2984	Cleaner.exe
Token: SeDebugPrivilege	4524	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 4608	2228	file.exe	108
PID 2228 wrote to memory of 4608	2228	file.exe	108
PID 2228 wrote to memory of 4608	2228	file.exe	108
PID 4608 wrote to memory of 2984	4608	cmd.exe	110
PID 4608 wrote to memory of 2984	4608	cmd.exe	110
PID 2228 wrote to memory of 3696	2228	file.exe	126
PID 2228 wrote to memory of 3696	2228	file.exe	126
PID 2228 wrote to memory of 3696	2228	file.exe	126
PID 3696 wrote to memory of 4524	3696	cmd.exe	130
PID 3696 wrote to memory of 4524	3696	cmd.exe	130
PID 3696 wrote to memory of 4524	3696	cmd.exe	130

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:2228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 452
  2⤵
  - Program crash
  PID:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 772
  2⤵
  - Program crash
  PID:2820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 760
  2⤵
  - Program crash
  PID:2584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 760
  2⤵
  - Program crash
  PID:4252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 836
  2⤵
  - Program crash
  PID:912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 928
  2⤵
  - Program crash
  PID:2520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1000
  2⤵
  - Program crash
  PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1044
  2⤵
  - Program crash
  PID:2420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1376
  2⤵
  - Program crash
  PID:1828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\UDjkY1DhNaKPks1Yy8F39tDr24Z\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4608
- - C:\Users\Admin\AppData\Local\Temp\UDjkY1DhNaKPks1Yy8F39tDr24Z\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\UDjkY1DhNaKPks1Yy8F39tDr24Z\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1348
  2⤵
  - Program crash
  PID:1016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 1672
  2⤵
  - Program crash
  PID:3804
- 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:3696
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2228 -s 492
  2⤵
  - Program crash
  PID:4580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2228 -ip 2228
1⤵
PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2228 -ip 2228
1⤵
PID:1952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2228 -ip 2228
1⤵
PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2228 -ip 2228
1⤵
PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2228 -ip 2228
1⤵
PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2228 -ip 2228
1⤵
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 632 -p 2228 -ip 2228
1⤵
PID:2768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 2228 -ip 2228
1⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 616 -p 2228 -ip 2228
1⤵
PID:436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 664 -p 2228 -ip 2228
1⤵
PID:3372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 2228 -ip 2228
1⤵
PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 656 -p 2228 -ip 2228
1⤵
PID:4784

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\UDjkY1DhNaKPks1Yy8F39tDr24Z\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\UDjkY1DhNaKPks1Yy8F39tDr24Z\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\UDjkY1DhNaKPks1Yy8F39tDr24Z\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/2228-136-0x0000000000779000-0x00000000007A0000-memory.dmp

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memory/2228-133-0x0000000000700000-0x000000000073F000-memory.dmp

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memory/2228-137-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/2228-153-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/2228-152-0x0000000000779000-0x00000000007A0000-memory.dmp

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memory/2228-134-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/2228-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2228-132-0x0000000000779000-0x00000000007A0000-memory.dmp

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memory/2984-145-0x00007FF82C7E0000-0x00007FF82D2A1000-memory.dmp

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memory/2984-144-0x00007FF82C7E0000-0x00007FF82D2A1000-memory.dmp

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memory/2984-143-0x000002606C490000-0x000002606C4D2000-memory.dmp

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memory/2984-141-0x0000026069F70000-0x000002606A0C8000-memory.dmp

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