nymaim | 9e1f8195e29362ce2ed71da9f7331b58d8211bbb0d79cd47930e63c4152a7442

Analysis

max time kernel
106s
max time network
151s
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, 18:47

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General

Target
file.exe
Size 228KB
Sample220930-xe665sfdep
SHA256 9e1f8195e29362ce2ed71da9f7331b58d8211bbb0d79cd47930e63c4152a7442
MD5 2528cd2745a4cc3645349925acd9f344
SHA1 afc5baa5849460dfd7fc1baac3415fcd94471ba8
SHA512 05644aabeaede489fbd8cd4dbc419408106622ca6db2b40bd945aa0ce620403e411b36a17f5b71a033ac49a31610cdf2db6c18908ba9079e9c09501ec53b50a0
SSDEEP 3072:dJgUN1O/GROCYwteWruxrN+XdhjjFUIAPY07KIULgroNY1zlmavDm6p:JOJCYFWrSrN6dhjjFgAJLgroizCI
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
1504	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-1-5-21-2891029575-1462575-1165213807-1000\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
3380	1180	WerFault.exe	79
1872	1180	WerFault.exe	79
4560	1180	WerFault.exe	79
3644	1180	WerFault.exe	79
2004	1180	WerFault.exe	79
552	1180	WerFault.exe	79
3428	1180	WerFault.exe	79
5048	1180	WerFault.exe	79
3396	1180	WerFault.exe	79
32	1180	WerFault.exe	79
4036	1180	WerFault.exe	79
3744	1180	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
1824	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1180	file.exe
1180	file.exe
1180	file.exe
1180	file.exe
1180	file.exe
1180	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1180	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1504	Cleaner.exe
Token: SeDebugPrivilege	1824	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 2980	1180	file.exe	105
PID 1180 wrote to memory of 2980	1180	file.exe	105
PID 1180 wrote to memory of 2980	1180	file.exe	105
PID 2980 wrote to memory of 1504	2980	cmd.exe	107
PID 2980 wrote to memory of 1504	2980	cmd.exe	107
PID 1180 wrote to memory of 1360	1180	file.exe	116
PID 1180 wrote to memory of 1360	1180	file.exe	116
PID 1180 wrote to memory of 1360	1180	file.exe	116
PID 1360 wrote to memory of 1824	1360	cmd.exe	120
PID 1360 wrote to memory of 1824	1360	cmd.exe	120
PID 1360 wrote to memory of 1824	1360	cmd.exe	120

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:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 456
  2⤵
  - Program crash
  PID:3380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 776
  2⤵
  - Program crash
  PID:1872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 812
  2⤵
  - Program crash
  PID:4560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 812
  2⤵
  - Program crash
  PID:3644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 804
  2⤵
  - Program crash
  PID:2004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 928
  2⤵
  - Program crash
  PID:552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 944
  2⤵
  - Program crash
  PID:3428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1048
  2⤵
  - Program crash
  PID:5048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1424
  2⤵
  - Program crash
  PID:3396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\UHSzOazGzZCEwcj6Wh\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2980
- - C:\Users\Admin\AppData\Local\Temp\UHSzOazGzZCEwcj6Wh\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\UHSzOazGzZCEwcj6Wh\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1444
  2⤵
  - Program crash
  PID:32
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1776
  2⤵
  - Program crash
  PID:4036
- 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:1360
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1732
  2⤵
  - Program crash
  PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1180 -ip 1180
1⤵
PID:3636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1180 -ip 1180
1⤵
PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1180 -ip 1180
1⤵
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1180 -ip 1180
1⤵
PID:5072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1180 -ip 1180
1⤵
PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1180 -ip 1180
1⤵
PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1180 -ip 1180
1⤵
PID:3508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1180 -ip 1180
1⤵
PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1180 -ip 1180
1⤵
PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1180 -ip 1180
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1180 -ip 1180
1⤵
PID:372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1180 -ip 1180
1⤵
PID:3768

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\UHSzOazGzZCEwcj6Wh\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\UHSzOazGzZCEwcj6Wh\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\UHSzOazGzZCEwcj6Wh\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/1180-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1180-133-0x0000000000740000-0x000000000077F000-memory.dmp

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memory/1180-137-0x0000000000400000-0x0000000000595000-memory.dmp

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memory/1180-154-0x0000000000400000-0x0000000000595000-memory.dmp

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memory/1180-153-0x000000000082D000-0x0000000000853000-memory.dmp

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memory/1180-135-0x000000000082D000-0x0000000000853000-memory.dmp

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memory/1180-134-0x0000000000400000-0x0000000000595000-memory.dmp

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memory/1180-136-0x0000000000740000-0x000000000077F000-memory.dmp

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memory/1180-132-0x000000000082D000-0x0000000000853000-memory.dmp

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memory/1504-145-0x0000022DBF780000-0x0000022DBF7C2000-memory.dmp

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memory/1504-146-0x00007FFF77770000-0x00007FFF78231000-memory.dmp

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memory/1504-143-0x00007FFF77770000-0x00007FFF78231000-memory.dmp

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memory/1504-142-0x0000022DBD980000-0x0000022DBDAD8000-memory.dmp

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