nymaim | 05e77d625f6419c9dcbe993512c631b99ba81ae352e178e232f5aeb1fceabbd5

Analysis

max time kernel
100s
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
24/09/2022, 00:52

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General

Target
file.exe
Size 287KB
Sample220924-a73m4aacd7
SHA256 05e77d625f6419c9dcbe993512c631b99ba81ae352e178e232f5aeb1fceabbd5
MD5 ac34057fdc0e87f5bf7c8e327a87e353
SHA1 ba85cb18d84e04dd1e59f718e842702cc560be54
SHA512 9663a8caef67c3aa363211188f542717d1604f597da4bb55b54416b38031baa0b740a8f7d34b7464d598d78e1b284831370ac62a5558269c0c85c9c0ebcf0872
SSDEEP 6144:q3pLpZ80zKFCTH0Bp/HQvLpuXkkgqIy+s:q59ZZzUxnaWeRy
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
4392	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 12 IoCs

pid	pid_target	Process	procid_target
2640	4112	WerFault.exe	78
4040	4112	WerFault.exe	78
4772	4112	WerFault.exe	78
2208	4112	WerFault.exe	78
548	4112	WerFault.exe	78
2780	4112	WerFault.exe	78
1332	4112	WerFault.exe	78
2380	4112	WerFault.exe	78
4972	4112	WerFault.exe	78
1828	4112	WerFault.exe	78
3360	4112	WerFault.exe	78
3760	4112	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
4988	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4112	file.exe
4112	file.exe
4112	file.exe
4112	file.exe
4112	file.exe
4112	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4112	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4392	Cleaner.exe
Token: SeDebugPrivilege	4988	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 216	4112	file.exe	102
PID 4112 wrote to memory of 216	4112	file.exe	102
PID 4112 wrote to memory of 216	4112	file.exe	102
PID 216 wrote to memory of 4392	216	cmd.exe	104
PID 216 wrote to memory of 4392	216	cmd.exe	104
PID 4112 wrote to memory of 1132	4112	file.exe	116
PID 4112 wrote to memory of 1132	4112	file.exe	116
PID 4112 wrote to memory of 1132	4112	file.exe	116
PID 1132 wrote to memory of 4988	1132	cmd.exe	120
PID 1132 wrote to memory of 4988	1132	cmd.exe	120
PID 1132 wrote to memory of 4988	1132	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:4112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 452
  2⤵
  - Program crash
  PID:2640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 716
  2⤵
  - Program crash
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 772
  2⤵
  - Program crash
  PID:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 772
  2⤵
  - Program crash
  PID:2208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 876
  2⤵
  - Program crash
  PID:548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 968
  2⤵
  - Program crash
  PID:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 1000
  2⤵
  - Program crash
  PID:1332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 1104
  2⤵
  - Program crash
  PID:2380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 1388
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\pDYbvsg47c\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\Users\Admin\AppData\Local\Temp\pDYbvsg47c\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\pDYbvsg47c\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 1384
  2⤵
  - Program crash
  PID:1828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 1660
  2⤵
  - Program crash
  PID:3360
- 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:1132
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 516
  2⤵
  - Program crash
  PID:3760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4112 -ip 4112
1⤵
PID:2156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4112 -ip 4112
1⤵
PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4112 -ip 4112
1⤵
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4112 -ip 4112
1⤵
PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4112 -ip 4112
1⤵
PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 4112 -ip 4112
1⤵
PID:3720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 4112 -ip 4112
1⤵
PID:2112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4112 -ip 4112
1⤵
PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4112 -ip 4112
1⤵
PID:4796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 4112 -ip 4112
1⤵
PID:2116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 4112 -ip 4112
1⤵
PID:4052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 660 -p 4112 -ip 4112
1⤵
PID:4524

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\pDYbvsg47c\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\pDYbvsg47c\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\pDYbvsg47c\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/4112-144-0x0000000000400000-0x00000000005A2000-memory.dmp

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memory/4112-134-0x0000000000400000-0x00000000005A2000-memory.dmp

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memory/4112-143-0x00000000008D9000-0x00000000008FF000-memory.dmp

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memory/4112-132-0x00000000008D9000-0x00000000008FF000-memory.dmp

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memory/4112-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4112-133-0x0000000000840000-0x000000000087F000-memory.dmp

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memory/4112-152-0x0000000000400000-0x00000000005A2000-memory.dmp

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memory/4392-139-0x000001A02FC00000-0x000001A02FD80000-memory.dmp

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memory/4392-141-0x000001A031AA0000-0x000001A031AE2000-memory.dmp

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memory/4392-142-0x00007FFFDEE00000-0x00007FFFDF8C1000-memory.dmp

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memory/4392-145-0x00007FFFDEE00000-0x00007FFFDF8C1000-memory.dmp

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