nymaim | 253d17144c05382ba25f4d2d55c86a6848cdbabdf0615bc2f43dfd792cf14868

Analysis

max time kernel
119s
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
02/10/2022, 14:51

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General

Target
file.exe
Size 221KB
Sample221002-r75wwsbda5
SHA256 253d17144c05382ba25f4d2d55c86a6848cdbabdf0615bc2f43dfd792cf14868
MD5 9be6e924eb311632735f99a756b130c7
SHA1 ebcb5def42dd9614fd5a808911ef5e284c8d4f76
SHA512 27ba3fbf168305c94fe675f6524d94dc491fadc2780f8d90ee7ca384aa769ce29dd6b81364449025437513764c24c6a726035095453e833feee252ce1902cad6
SSDEEP 3072:geeXYwnRPtwMR94/XOELB6Z6i6wH/60rONEAhzpd83SxjKhzUiAYNZwBXA:3k7R94/+2EUi6wy0rO2ARduSiAow
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
944	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 11 IoCs

pid	pid_target	Process	procid_target
2100	1180	WerFault.exe	81
2012	1180	WerFault.exe	81
4220	1180	WerFault.exe	81
4060	1180	WerFault.exe	81
3884	1180	WerFault.exe	81
4392	1180	WerFault.exe	81
3496	1180	WerFault.exe	81
5108	1180	WerFault.exe	81
3024	1180	WerFault.exe	81
5084	1180	WerFault.exe	81
3308	1180	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
3408	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	944	Cleaner.exe
Token: SeDebugPrivilege	3408	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 1840	1180	file.exe	104
PID 1180 wrote to memory of 1840	1180	file.exe	104
PID 1180 wrote to memory of 1840	1180	file.exe	104
PID 1840 wrote to memory of 944	1840	cmd.exe	106
PID 1840 wrote to memory of 944	1840	cmd.exe	106
PID 1180 wrote to memory of 1176	1180	file.exe	115
PID 1180 wrote to memory of 1176	1180	file.exe	115
PID 1180 wrote to memory of 1176	1180	file.exe	115
PID 1176 wrote to memory of 3408	1176	cmd.exe	119
PID 1176 wrote to memory of 3408	1176	cmd.exe	119
PID 1176 wrote to memory of 3408	1176	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:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 456
  2⤵
  - Program crash
  PID:2100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 776
  2⤵
  - Program crash
  PID:2012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 812
  2⤵
  - Program crash
  PID:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 812
  2⤵
  - Program crash
  PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 788
  2⤵
  - Program crash
  PID:3884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 928
  2⤵
  - Program crash
  PID:4392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1140
  2⤵
  - Program crash
  PID:3496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1360
  2⤵
  - Program crash
  PID:5108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1840
- - C:\Users\Admin\AppData\Local\Temp\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1396
  2⤵
  - Program crash
  PID:3024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1424
  2⤵
  - Program crash
  PID:5084
- 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:1176
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 516
  2⤵
  - Program crash
  PID:3308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1180 -ip 1180
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1180 -ip 1180
1⤵
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1180 -ip 1180
1⤵
PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1180 -ip 1180
1⤵
PID:1972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1180 -ip 1180
1⤵
PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1180 -ip 1180
1⤵
PID:3084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1180 -ip 1180
1⤵
PID:3160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1180 -ip 1180
1⤵
PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1180 -ip 1180
1⤵
PID:4292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1180 -ip 1180
1⤵
PID:4584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1180 -ip 1180
1⤵
PID:4428

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\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\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\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\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\hLzYdRO2xbP8mlXd4QMiw3AcLoedg\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/944-144-0x00007FFED8F70000-0x00007FFED9A31000-memory.dmp

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memory/944-141-0x00000241A6990000-0x00000241A6AE8000-memory.dmp

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memory/944-145-0x00007FFED8F70000-0x00007FFED9A31000-memory.dmp

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memory/944-143-0x00000241A8690000-0x00000241A86D2000-memory.dmp

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memory/1180-135-0x000000000076D000-0x0000000000794000-memory.dmp

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memory/1180-133-0x00000000022F0000-0x000000000232F000-memory.dmp

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memory/1180-134-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/1180-132-0x000000000076D000-0x0000000000794000-memory.dmp

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memory/1180-136-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/1180-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1180-152-0x000000000076D000-0x0000000000794000-memory.dmp

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memory/1180-153-0x0000000000400000-0x0000000000594000-memory.dmp

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