nymaim | d14cb62289c31c4564a168c6d8e33688a6fef5d2aa1371f744667284b52c4bd4

Analysis

max time kernel
121s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2022, 00:09

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General

Target
file.exe
Size 235KB
Sample221002-affz1sechp
SHA256 d14cb62289c31c4564a168c6d8e33688a6fef5d2aa1371f744667284b52c4bd4
MD5 18fb26c94b99d399b83281a4f1f1215b
SHA1 8a65ffc0b657b9bf1818505b6f92375aabde14b6
SHA512 abc95cd54694b71f5e62f42776053385b007311ef674220816fddd3e04c8a573db123e780de101a1dad86b1883a9b9f2e278fff8c2c71394e80a3c772ba9b170
SSDEEP 3072:d+dVTs0vRrA1Yv/x8rIyGup2rXV0gC7EvhT1LOBl9tIknQyBV4W4ziV+2LvD:6TsHe/x8cXX697eK7PvtH74W9v
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
1068	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-1-5-21-2629973501-4017243118-3254762364-1000\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 13 IoCs

pid	pid_target	Process	procid_target
1744	4136	WerFault.exe	82
4592	4136	WerFault.exe	82
4492	4136	WerFault.exe	82
228	4136	WerFault.exe	82
3680	4136	WerFault.exe	82
3520	4136	WerFault.exe	82
3452	4136	WerFault.exe	82
2136	4136	WerFault.exe	82
3532	4136	WerFault.exe	82
1408	1068	WerFault.exe	104
1632	4136	WerFault.exe	82
5048	4136	WerFault.exe	82
2104	4136	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
1464	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4136	file.exe
4136	file.exe
4136	file.exe
4136	file.exe
4136	file.exe
4136	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4136	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1068	Cleaner.exe
Token: SeDebugPrivilege	1464	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 4312	4136	file.exe	102
PID 4136 wrote to memory of 4312	4136	file.exe	102
PID 4136 wrote to memory of 4312	4136	file.exe	102
PID 4312 wrote to memory of 1068	4312	cmd.exe	104
PID 4312 wrote to memory of 1068	4312	cmd.exe	104
PID 4136 wrote to memory of 2728	4136	file.exe	121
PID 4136 wrote to memory of 2728	4136	file.exe	121
PID 4136 wrote to memory of 2728	4136	file.exe	121
PID 2728 wrote to memory of 1464	2728	cmd.exe	125
PID 2728 wrote to memory of 1464	2728	cmd.exe	125
PID 2728 wrote to memory of 1464	2728	cmd.exe	125

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:4136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 456
  2⤵
  - Program crash
  PID:1744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 768
  2⤵
  - Program crash
  PID:4592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 808
  2⤵
  - Program crash
  PID:4492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 808
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 796
  2⤵
  - Program crash
  PID:3680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 928
  2⤵
  - Program crash
  PID:3520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 936
  2⤵
  - Program crash
  PID:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 1256
  2⤵
  - Program crash
  PID:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 1376
  2⤵
  - Program crash
  PID:3532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\eQ6InmY6TIwwK5EZfC1ZN\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4312
- - C:\Users\Admin\AppData\Local\Temp\eQ6InmY6TIwwK5EZfC1ZN\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\eQ6InmY6TIwwK5EZfC1ZN\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1068
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1068 -s 1596
      4⤵
      Program crash
      PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 1360
  2⤵
  - Program crash
  PID:1632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 1756
  2⤵
  - Program crash
  PID:5048
- 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:2728
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 496
  2⤵
  - Program crash
  PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4136 -ip 4136
1⤵
PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4136 -ip 4136
1⤵
PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4136 -ip 4136
1⤵
PID:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4136 -ip 4136
1⤵
PID:4048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4136 -ip 4136
1⤵
PID:2372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4136 -ip 4136
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4136 -ip 4136
1⤵
PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4136 -ip 4136
1⤵
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4136 -ip 4136
1⤵
PID:664

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 592 -p 1068 -ip 1068
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4136 -ip 4136
1⤵
PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4136 -ip 4136
1⤵
PID:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 632 -p 4136 -ip 4136
1⤵
PID:2420

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\eQ6InmY6TIwwK5EZfC1ZN\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\eQ6InmY6TIwwK5EZfC1ZN\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\eQ6InmY6TIwwK5EZfC1ZN\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/1068-144-0x00000240DCDC0000-0x00000240DCE02000-memory.dmp

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memory/1068-146-0x00007FFECE630000-0x00007FFECF0F1000-memory.dmp

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memory/1068-145-0x00007FFECE630000-0x00007FFECF0F1000-memory.dmp

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memory/1068-141-0x00000240DAF80000-0x00000240DB0D8000-memory.dmp

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memory/1068-142-0x00007FFECE630000-0x00007FFECF0F1000-memory.dmp

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memory/4136-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4136-136-0x0000000000400000-0x0000000000598000-memory.dmp

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memory/4136-135-0x00000000005ED000-0x0000000000614000-memory.dmp

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memory/4136-132-0x00000000005ED000-0x0000000000614000-memory.dmp

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memory/4136-134-0x0000000000400000-0x0000000000598000-memory.dmp

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memory/4136-133-0x0000000002300000-0x000000000233F000-memory.dmp

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memory/4136-153-0x00000000005ED000-0x0000000000614000-memory.dmp

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memory/4136-154-0x0000000000400000-0x0000000000598000-memory.dmp

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