nymaim | b336edf1bd31ce7bfa4e5bbc2d0eb9fb23522027a865bf4d39b35996f15e549e

Analysis

max time kernel
100s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2022, 06:58

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General

Target
file.exe
Size 289KB
Sample220925-hrha8adff4
SHA256 b336edf1bd31ce7bfa4e5bbc2d0eb9fb23522027a865bf4d39b35996f15e549e
MD5 0087986c4e0dd760531d7ec4e43f2574
SHA1 386123b243ba21285cf6af96891a00faf3333e51
SHA512 91213bf7e8bd09a2f4781d32c2727729e02ed43490d2097a275c515e9b0556f30b2fea30b3e31465e446bfe5b9cebdd6c5a5bd72ffaeebf21aeb30fb505e80cc
SSDEEP 6144:6LLHY5IWWaJbe9I61SfdKzOa556z8Yv2XsybZ:6PHIgQbuI6ofoOe6Xx2
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
224	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
3412	4020	WerFault.exe	78
4772	4020	WerFault.exe	78
4936	4020	WerFault.exe	78
2204	4020	WerFault.exe	78
1540	4020	WerFault.exe	78
1984	4020	WerFault.exe	78
1468	4020	WerFault.exe	78
4016	4020	WerFault.exe	78
3088	4020	WerFault.exe	78
852	4020	WerFault.exe	78
4360	4020	WerFault.exe	78
4988	4020	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
5020	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4020	file.exe
4020	file.exe
4020	file.exe
4020	file.exe
4020	file.exe
4020	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4020	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	Cleaner.exe
Token: SeDebugPrivilege	5020	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4020 wrote to memory of 1188	4020	file.exe	98
PID 4020 wrote to memory of 1188	4020	file.exe	98
PID 4020 wrote to memory of 1188	4020	file.exe	98
PID 1188 wrote to memory of 224	1188	cmd.exe	100
PID 1188 wrote to memory of 224	1188	cmd.exe	100
PID 4020 wrote to memory of 3412	4020	file.exe	115
PID 4020 wrote to memory of 3412	4020	file.exe	115
PID 4020 wrote to memory of 3412	4020	file.exe	115
PID 3412 wrote to memory of 5020	3412	cmd.exe	119
PID 3412 wrote to memory of 5020	3412	cmd.exe	119
PID 3412 wrote to memory of 5020	3412	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:4020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 452
  2⤵
  - Program crash
  PID:3412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 772
  2⤵
  - Program crash
  PID:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 780
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 804
  2⤵
  - Program crash
  PID:2204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 812
  2⤵
  - Program crash
  PID:1540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 928
  2⤵
  - Program crash
  PID:1984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 932
  2⤵
  - Program crash
  PID:1468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1144
  2⤵
  - Program crash
  PID:4016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1384
  2⤵
  - Program crash
  PID:3088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\TdEZnDWTandzbywkwudnYr70\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1188
- - C:\Users\Admin\AppData\Local\Temp\TdEZnDWTandzbywkwudnYr70\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\TdEZnDWTandzbywkwudnYr70\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1396
  2⤵
  - Program crash
  PID:852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1664
  2⤵
  - Program crash
  PID:4360
- 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:3412
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 492
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4020 -ip 4020
1⤵
PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4020 -ip 4020
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4020 -ip 4020
1⤵
PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4020 -ip 4020
1⤵
PID:4100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4020 -ip 4020
1⤵
PID:4220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4020 -ip 4020
1⤵
PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4020 -ip 4020
1⤵
PID:4796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4020 -ip 4020
1⤵
PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4020 -ip 4020
1⤵
PID:3000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4020 -ip 4020
1⤵
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4020 -ip 4020
1⤵
PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4020 -ip 4020
1⤵
PID:1932

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\TdEZnDWTandzbywkwudnYr70\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\TdEZnDWTandzbywkwudnYr70\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\TdEZnDWTandzbywkwudnYr70\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

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memory/224-141-0x000002A165460000-0x000002A1654A2000-memory.dmp

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memory/224-144-0x00007FFD89480000-0x00007FFD89F41000-memory.dmp

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memory/224-142-0x00007FFD89480000-0x00007FFD89F41000-memory.dmp

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memory/224-139-0x000002A164D10000-0x000002A164E90000-memory.dmp

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memory/4020-133-0x0000000002300000-0x000000000233F000-memory.dmp

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memory/4020-134-0x0000000000400000-0x00000000005A2000-memory.dmp

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memory/4020-132-0x0000000000879000-0x000000000089F000-memory.dmp

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memory/4020-143-0x0000000000400000-0x00000000005A2000-memory.dmp

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memory/4020-145-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4020-151-0x0000000000400000-0x00000000005A2000-memory.dmp

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