nymaim | d3b573beaa874b2eb5ffc897796ebaee26bbdd64800348492e0b0f587cb84b0d

Analysis

max time kernel
103s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2022, 15:43

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General

Target
file.exe
Size 284KB
Sample220924-s5w2msbef2
SHA256 d3b573beaa874b2eb5ffc897796ebaee26bbdd64800348492e0b0f587cb84b0d
MD5 2df5f63d6ebb4180785f654685d98b32
SHA1 24752fe0b22befc81e6f47fa5ab093057c998ba0
SHA512 999225655aa376b924361760c9ac503312c602de4e129b68034b8b5249cb9595cea49714f38dee76d66dc2446143815431e7a5c0f1778ec250ccc8cfc494db6a
SSDEEP 3072:WvSmXLg/Ch8rb5LKBvtIC+K937KwRDdO+nJPRB6MAW/p66w1UTbv3HWVtr/3zIFX:QXL3h8VKBvt6WOkpbnJPRFD/nvb/WVt
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
420	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-1-5-21-929662420-1054238289-2961194603-1000\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
4920	2040	WerFault.exe	82
3784	2040	WerFault.exe	82
4744	2040	WerFault.exe	82
2088	2040	WerFault.exe	82
4176	2040	WerFault.exe	82
1436	2040	WerFault.exe	82
3728	2040	WerFault.exe	82
3224	2040	WerFault.exe	82
2344	2040	WerFault.exe	82
2860	2040	WerFault.exe	82
4496	2040	WerFault.exe	82
4176	2040	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
116	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2040	file.exe
2040	file.exe
2040	file.exe
2040	file.exe
2040	file.exe
2040	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2040	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	420	Cleaner.exe
Token: SeDebugPrivilege	116	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 3628	2040	file.exe	108
PID 2040 wrote to memory of 3628	2040	file.exe	108
PID 2040 wrote to memory of 3628	2040	file.exe	108
PID 3628 wrote to memory of 420	3628	cmd.exe	110
PID 3628 wrote to memory of 420	3628	cmd.exe	110
PID 2040 wrote to memory of 4052	2040	file.exe	127
PID 2040 wrote to memory of 4052	2040	file.exe	127
PID 2040 wrote to memory of 4052	2040	file.exe	127
PID 4052 wrote to memory of 116	4052	cmd.exe	129
PID 4052 wrote to memory of 116	4052	cmd.exe	129
PID 4052 wrote to memory of 116	4052	cmd.exe	129

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:2040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 468
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 772
  2⤵
  - Program crash
  PID:3784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 804
  2⤵
  - Program crash
  PID:4744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 772
  2⤵
  - Program crash
  PID:2088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 764
  2⤵
  - Program crash
  PID:4176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 836
  2⤵
  - Program crash
  PID:1436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 836
  2⤵
  - Program crash
  PID:3728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1032
  2⤵
  - Program crash
  PID:3224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1388
  2⤵
  - Program crash
  PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\8P7fB34zIOaao9lVbk\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3628
- - C:\Users\Admin\AppData\Local\Temp\8P7fB34zIOaao9lVbk\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\8P7fB34zIOaao9lVbk\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1384
  2⤵
  - Program crash
  PID:2860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1460
  2⤵
  - Program crash
  PID:4496
- 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:4052
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1692
  2⤵
  - Program crash
  PID:4176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2040 -ip 2040
1⤵
PID:1168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2040 -ip 2040
1⤵
PID:1376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2040 -ip 2040
1⤵
PID:960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2040 -ip 2040
1⤵
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2040 -ip 2040
1⤵
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 2040 -ip 2040
1⤵
PID:4632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 616 -p 2040 -ip 2040
1⤵
PID:1204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 2040 -ip 2040
1⤵
PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 656 -p 2040 -ip 2040
1⤵
PID:4584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 2040 -ip 2040
1⤵
PID:4792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 648 -p 2040 -ip 2040
1⤵
PID:2480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 692 -p 2040 -ip 2040
1⤵
PID:3456

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\8P7fB34zIOaao9lVbk\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\8P7fB34zIOaao9lVbk\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\8P7fB34zIOaao9lVbk\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/420-144-0x00007FFD407C0000-0x00007FFD41281000-memory.dmp

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memory/420-142-0x000001E3E8B90000-0x000001E3E8BD2000-memory.dmp

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memory/420-145-0x00007FFD407C0000-0x00007FFD41281000-memory.dmp

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memory/420-140-0x000001E3E6D70000-0x000001E3E6EF0000-memory.dmp

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memory/2040-143-0x0000000000400000-0x00000000005A1000-memory.dmp

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memory/2040-134-0x0000000000400000-0x00000000005A1000-memory.dmp

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memory/2040-132-0x00000000008D9000-0x0000000000900000-memory.dmp

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memory/2040-135-0x00000000008D9000-0x0000000000900000-memory.dmp

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memory/2040-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2040-133-0x0000000000800000-0x000000000083F000-memory.dmp

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memory/2040-152-0x00000000008D9000-0x0000000000900000-memory.dmp

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memory/2040-153-0x0000000000400000-0x00000000005A1000-memory.dmp

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