nymaim | 85ce27fe2a189b1f7bc034e80bba9f1877a70a10b93d35f9e774f5b7e201aeb3

Analysis

max time kernel
101s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2022, 08:19

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General

Target
file.exe
Size 230KB
Sample220930-j7t6dsdac2
SHA256 85ce27fe2a189b1f7bc034e80bba9f1877a70a10b93d35f9e774f5b7e201aeb3
MD5 b41088df9cdfe9bf99ce53024a74a12b
SHA1 d945116b9ddb283a473d9273899f92272a86bc9d
SHA512 3f7d3638e3abc1b716eb6da6658dea25ac76a8ee81e15aedb176c56038d377d3880713b727c5db8be28d83dc40d849cabd97777c0383f0db01365042e5af85be
SSDEEP 6144:4rBV9n3btGkPHlBIvkgnEzXJKyGp5/0jH/nh:wBLBGkPb6S5KyGj07/h
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
2328	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-1-5-21-2295526160-1155304984-640977766-1000\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 14 IoCs

pid	pid_target	Process	procid_target
4424	2268	WerFault.exe	80
1500	2268	WerFault.exe	80
4048	2268	WerFault.exe	80
1632	2268	WerFault.exe	80
4400	2268	WerFault.exe	80
1028	2268	WerFault.exe	80
2604	2268	WerFault.exe	80
3900	2268	WerFault.exe	80
3152	2268	WerFault.exe	80
4720	2268	WerFault.exe	80
4424	2268	WerFault.exe	80
1264	2268	WerFault.exe	80
1376	2268	WerFault.exe	80
1624	2268	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
4488	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2268	file.exe
2268	file.exe
2268	file.exe
2268	file.exe
2268	file.exe
2268	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2268	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	Cleaner.exe
Token: SeDebugPrivilege	4488	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 3832	2268	file.exe	103
PID 2268 wrote to memory of 3832	2268	file.exe	103
PID 2268 wrote to memory of 3832	2268	file.exe	103
PID 3832 wrote to memory of 2328	3832	cmd.exe	105
PID 3832 wrote to memory of 2328	3832	cmd.exe	105
PID 2268 wrote to memory of 1380	2268	file.exe	116
PID 2268 wrote to memory of 1380	2268	file.exe	116
PID 2268 wrote to memory of 1380	2268	file.exe	116
PID 1380 wrote to memory of 4488	1380	cmd.exe	119
PID 1380 wrote to memory of 4488	1380	cmd.exe	119
PID 1380 wrote to memory of 4488	1380	cmd.exe	119

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:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 456
  2⤵
  - Program crash
  PID:4424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 772
  2⤵
  - Program crash
  PID:1500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 764
  2⤵
  - Program crash
  PID:4048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 764
  2⤵
  - Program crash
  PID:1632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 800
  2⤵
  - Program crash
  PID:4400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 928
  2⤵
  - Program crash
  PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1020
  2⤵
  - Program crash
  PID:2604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1376
  2⤵
  - Program crash
  PID:3900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\BqH0xccqE\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3832
- - C:\Users\Admin\AppData\Local\Temp\BqH0xccqE\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\BqH0xccqE\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1376
  2⤵
  - Program crash
  PID:3152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1636
  2⤵
  - Program crash
  PID:4720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1664
  2⤵
  - Program crash
  PID:4424
- 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:1380
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1648
  2⤵
  - Program crash
  PID:1264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1380
  2⤵
  - Program crash
  PID:1376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1684
  2⤵
  - Program crash
  PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2268 -ip 2268
1⤵
PID:3844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 2268 -ip 2268
1⤵
PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2268 -ip 2268
1⤵
PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2268 -ip 2268
1⤵
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2268 -ip 2268
1⤵
PID:4232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2268 -ip 2268
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2268 -ip 2268
1⤵
PID:4416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2268 -ip 2268
1⤵
PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 2268 -ip 2268
1⤵
PID:4668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2268 -ip 2268
1⤵
PID:4028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2268 -ip 2268
1⤵
PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 2268 -ip 2268
1⤵
PID:1508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 2268 -ip 2268
1⤵
PID:3136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2268 -ip 2268
1⤵
PID:4464

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

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\BqH0xccqE\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\BqH0xccqE\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\BqH0xccqE\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/2268-144-0x00000000022D0000-0x000000000230F000-memory.dmp

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memory/2268-143-0x0000000000689000-0x00000000006AF000-memory.dmp

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memory/2268-153-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2268-133-0x00000000022D0000-0x000000000230F000-memory.dmp

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memory/2268-134-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2268-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2268-145-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2268-132-0x0000000000689000-0x00000000006AF000-memory.dmp

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memory/2328-142-0x00007FFCC3840000-0x00007FFCC4301000-memory.dmp

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memory/2328-146-0x00007FFCC3840000-0x00007FFCC4301000-memory.dmp

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memory/2328-141-0x0000026B309E0000-0x0000026B30A22000-memory.dmp

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memory/2328-139-0x0000026B164C0000-0x0000026B16618000-memory.dmp

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