nymaim | e873f4e1b6020ffd62cd64bb01383d97102f1f18c828bacfddcb97346f5b1ebf

Analysis

max time kernel
99s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 07:17

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General

Target
file.exe
Size 232KB
Sample221001-h4cw9sffa2
SHA256 e873f4e1b6020ffd62cd64bb01383d97102f1f18c828bacfddcb97346f5b1ebf
MD5 cde95e576fed0dd385b161d8cffa6c31
SHA1 b10ef6f96393d7b04a666e7c98c6aa98ac4b1a2e
SHA512 57b37136c6292876e3e8747d228b015341d963c94ccc101fc21744f80b5b5a19d52ec97e74721eef017de9d20519ca4c5425870c0da83b2af35748c2eecf583c
SSDEEP 3072:SBbkZFsreRWOoVyITQy3jiRq2nzfWno1uEVokzlbWO8mExwicKu7cCdNDm9:Ok3s4JRxzfWo1uErzoODESic+CXq9
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
3160	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 12 IoCs

pid	pid_target	Process	procid_target
708	4076	WerFault.exe	81
1832	4076	WerFault.exe	81
3828	4076	WerFault.exe	81
3592	4076	WerFault.exe	81
396	4076	WerFault.exe	81
4844	4076	WerFault.exe	81
3228	4076	WerFault.exe	81
1620	4076	WerFault.exe	81
4020	4076	WerFault.exe	81
4436	4076	WerFault.exe	81
1316	4076	WerFault.exe	81
436	4076	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
1832	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4076	file.exe
4076	file.exe
4076	file.exe
4076	file.exe
4076	file.exe
4076	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4076	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3160	Cleaner.exe
Token: SeDebugPrivilege	1832	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 4424	4076	file.exe	104
PID 4076 wrote to memory of 4424	4076	file.exe	104
PID 4076 wrote to memory of 4424	4076	file.exe	104
PID 4424 wrote to memory of 3160	4424	cmd.exe	106
PID 4424 wrote to memory of 3160	4424	cmd.exe	106
PID 4076 wrote to memory of 4876	4076	file.exe	118
PID 4076 wrote to memory of 4876	4076	file.exe	118
PID 4076 wrote to memory of 4876	4076	file.exe	118
PID 4876 wrote to memory of 1832	4876	cmd.exe	122
PID 4876 wrote to memory of 1832	4876	cmd.exe	122
PID 4876 wrote to memory of 1832	4876	cmd.exe	122

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:4076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 472
  2⤵
  - Program crash
  PID:708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 768
  2⤵
  - Program crash
  PID:1832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 788
  2⤵
  - Program crash
  PID:3828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 788
  2⤵
  - Program crash
  PID:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 840
  2⤵
  - Program crash
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 932
  2⤵
  - Program crash
  PID:4844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1004
  2⤵
  - Program crash
  PID:3228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1140
  2⤵
  - Program crash
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1380
  2⤵
  - Program crash
  PID:4020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\PlbScHGflrdWuN6xLzuyNv8Br9ux\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4424
- - C:\Users\Admin\AppData\Local\Temp\PlbScHGflrdWuN6xLzuyNv8Br9ux\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\PlbScHGflrdWuN6xLzuyNv8Br9ux\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1376
  2⤵
  - Program crash
  PID:4436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 1672
  2⤵
  - Program crash
  PID:1316
- 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:4876
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 496
  2⤵
  - Program crash
  PID:436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4076 -ip 4076
1⤵
PID:1360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4076 -ip 4076
1⤵
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4076 -ip 4076
1⤵
PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4076 -ip 4076
1⤵
PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4076 -ip 4076
1⤵
PID:3716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4076 -ip 4076
1⤵
PID:2092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4076 -ip 4076
1⤵
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4076 -ip 4076
1⤵
PID:3372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4076 -ip 4076
1⤵
PID:920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4076 -ip 4076
1⤵
PID:4236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4076 -ip 4076
1⤵
PID:1376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4076 -ip 4076
1⤵
PID:1480

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\PlbScHGflrdWuN6xLzuyNv8Br9ux\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\PlbScHGflrdWuN6xLzuyNv8Br9ux\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\PlbScHGflrdWuN6xLzuyNv8Br9ux\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/3160-141-0x000001C26D290000-0x000001C26D2D2000-memory.dmp

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memory/3160-142-0x00007FFE352B0000-0x00007FFE35D71000-memory.dmp

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memory/3160-145-0x00007FFE352B0000-0x00007FFE35D71000-memory.dmp

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memory/3160-139-0x000001C26AD60000-0x000001C26AEB8000-memory.dmp

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memory/4076-143-0x00000000007DD000-0x0000000000803000-memory.dmp

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memory/4076-134-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/4076-132-0x00000000007DD000-0x0000000000803000-memory.dmp

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memory/4076-144-0x0000000000400000-0x0000000000596000-memory.dmp

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memory/4076-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4076-133-0x0000000000730000-0x000000000076F000-memory.dmp

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memory/4076-152-0x00000000007DD000-0x0000000000803000-memory.dmp

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memory/4076-153-0x0000000000400000-0x0000000000596000-memory.dmp

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