nymaim | 1e5bea2cbd28c3d1ab6777f817f3bdb0e40aeeed6ed7b32e853bd002dc1b4ae4

Analysis

max time kernel
102s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
23/09/2022, 22:15

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General

Target
file.exe
Size 275KB
Sample220923-158dnsaac6
SHA256 1e5bea2cbd28c3d1ab6777f817f3bdb0e40aeeed6ed7b32e853bd002dc1b4ae4
MD5 28bebe6ac10db34d3440da995e73613a
SHA1 cc47eeffbae1cd60e3d18709874d3fea8638d1f9
SHA512 1b1190ef38f338e9c1274c26104f83ea3a6d267595d12ffe3b7a14696c1b3e176f4f397e7a078dde2cb6d5cac44d73f962aec06767306b8ac99c6f8580a4ae24
SSDEEP 3072:zxiskqLt2B9Ur5oiTsCmoAteGV0uz83jOQjoPfAcCzbMQOkN32IlyfeHrl3H3iZX:jLtKURI3oGJcroPa9OM22rl3y4
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
2988	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 11 IoCs

pid	pid_target	Process	procid_target
4656	4904	WerFault.exe	82
4628	4904	WerFault.exe	82
3512	4904	WerFault.exe	82
3420	4904	WerFault.exe	82
2852	4904	WerFault.exe	82
4652	4904	WerFault.exe	82
5112	4904	WerFault.exe	82
772	4904	WerFault.exe	82
1840	4904	WerFault.exe	82
3724	4904	WerFault.exe	82
4332	4904	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
1724	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4904	file.exe
4904	file.exe
4904	file.exe
4904	file.exe
4904	file.exe
4904	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4904	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	Cleaner.exe
Token: SeDebugPrivilege	1724	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 1312	4904	file.exe	109
PID 4904 wrote to memory of 1312	4904	file.exe	109
PID 4904 wrote to memory of 1312	4904	file.exe	109
PID 1312 wrote to memory of 2988	1312	cmd.exe	111
PID 1312 wrote to memory of 2988	1312	cmd.exe	111
PID 4904 wrote to memory of 1604	4904	file.exe	128
PID 4904 wrote to memory of 1604	4904	file.exe	128
PID 4904 wrote to memory of 1604	4904	file.exe	128
PID 1604 wrote to memory of 1724	1604	cmd.exe	130
PID 1604 wrote to memory of 1724	1604	cmd.exe	130
PID 1604 wrote to memory of 1724	1604	cmd.exe	130

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:4904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 452
  2⤵
  - Program crash
  PID:4656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 772
  2⤵
  - Program crash
  PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 804
  2⤵
  - Program crash
  PID:3512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 804
  2⤵
  - Program crash
  PID:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 816
  2⤵
  - Program crash
  PID:2852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 928
  2⤵
  - Program crash
  PID:4652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1004
  2⤵
  - Program crash
  PID:5112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1048
  2⤵
  - Program crash
  PID:772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1392
  2⤵
  - Program crash
  PID:1840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\b8YnmZKJJWX3WunW9FJrd6WVou5\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1312
- - C:\Users\Admin\AppData\Local\Temp\b8YnmZKJJWX3WunW9FJrd6WVou5\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\b8YnmZKJJWX3WunW9FJrd6WVou5\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1428
  2⤵
  - Program crash
  PID:3724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1740
  2⤵
  - Program crash
  PID:4332
- 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:1604
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4904 -ip 4904
1⤵
PID:1576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4904 -ip 4904
1⤵
PID:216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4904 -ip 4904
1⤵
PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4904 -ip 4904
1⤵
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4904 -ip 4904
1⤵
PID:4492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4904 -ip 4904
1⤵
PID:1040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4904 -ip 4904
1⤵
PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 600 -p 4904 -ip 4904
1⤵
PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4904 -ip 4904
1⤵
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 4904 -ip 4904
1⤵
PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 4904 -ip 4904
1⤵
PID:1300

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\b8YnmZKJJWX3WunW9FJrd6WVou5\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\b8YnmZKJJWX3WunW9FJrd6WVou5\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\b8YnmZKJJWX3WunW9FJrd6WVou5\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/2988-144-0x000001A2C9810000-0x000001A2C9852000-memory.dmp

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memory/2988-141-0x000001A2C92D0000-0x000001A2C9450000-memory.dmp

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memory/2988-142-0x00007FFDB5720000-0x00007FFDB61E1000-memory.dmp

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memory/2988-145-0x00007FFDB5720000-0x00007FFDB61E1000-memory.dmp

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memory/4904-134-0x0000000000400000-0x000000000059F000-memory.dmp

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memory/4904-132-0x0000000000709000-0x0000000000730000-memory.dmp

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memory/4904-135-0x0000000000709000-0x0000000000730000-memory.dmp

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memory/4904-133-0x0000000002190000-0x00000000021CF000-memory.dmp

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memory/4904-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4904-151-0x0000000000709000-0x0000000000730000-memory.dmp

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memory/4904-152-0x0000000000400000-0x000000000059F000-memory.dmp

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memory/4904-136-0x0000000000400000-0x000000000059F000-memory.dmp

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