nymaim | bedaf1afc3514b562f9f12ed77db321f3fd72940c9883f9f6f837fae6992d0ce

Analysis

max time kernel
121s
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, 22:02

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General

Target

file.exe
Size

284KB
MD5

0f2971d01eaa04817d8b249cf92ef256
SHA1

10ce251ca6f7a43c27d76b592352baa03a5ed8d0
SHA256

bedaf1afc3514b562f9f12ed77db321f3fd72940c9883f9f6f837fae6992d0ce
SHA512

f87cb2001c46398881a7d8bb0632afa56a3dd0a6a3f0deccddf858204d7e5cab73da5c9f6117ca0eb405a3311939bd59bcfd469f6d3d26a13e7390ec74fc364a
SSDEEP

3072:xkjLhLsmMWPN57R5vPYXghTaEOX50VrWHWYGYBmzlXSlye3sKf+kLYFx33DB1B5Y:MLkWDwXgUXX50VrqbG1SLsXkW3D3w

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
4564	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

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
3792	4700	WerFault.exe	78
980	4700	WerFault.exe	78
3452	4700	WerFault.exe	78
5016	4700	WerFault.exe	78
4852	4700	WerFault.exe	78
4332	4700	WerFault.exe	78
1912	4700	WerFault.exe	78
1476	4700	WerFault.exe	78
2916	4564	WerFault.exe	105
1816	4700	WerFault.exe	78
2656	4700	WerFault.exe	78
4668	4700	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
1172	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4700	file.exe
4700	file.exe
4700	file.exe
4700	file.exe
4700	file.exe
4700	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4700	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1172	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 3028	4700	file.exe	103
PID 4700 wrote to memory of 3028	4700	file.exe	103
PID 4700 wrote to memory of 3028	4700	file.exe	103
PID 3028 wrote to memory of 4564	3028	cmd.exe	105
PID 3028 wrote to memory of 4564	3028	cmd.exe	105
PID 4700 wrote to memory of 3480	4700	file.exe	113
PID 4700 wrote to memory of 3480	4700	file.exe	113
PID 4700 wrote to memory of 3480	4700	file.exe	113
PID 3480 wrote to memory of 1172	3480	cmd.exe	117
PID 3480 wrote to memory of 1172	3480	cmd.exe	117
PID 3480 wrote to memory of 1172	3480	cmd.exe	117

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:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 440
  2⤵
  - Program crash
  PID:3792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 772
  2⤵
  - Program crash
  PID:980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 800
  2⤵
  - Program crash
  PID:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 800
  2⤵
  - Program crash
  PID:5016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 812
  2⤵
  - Program crash
  PID:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 928
  2⤵
  - Program crash
  PID:4332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1000
  2⤵
  - Program crash
  PID:1912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 996
  2⤵
  - Program crash
  PID:1476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\89aiLif3\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Users\Admin\AppData\Local\Temp\89aiLif3\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\89aiLif3\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    PID:4564
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 4564 -s 976
      4⤵
      Program crash
      PID:2916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1404
  2⤵
  - Program crash
  PID:1816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1740
  2⤵
  - Program crash
  PID:2656
- 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:3480
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 492
  2⤵
  - Program crash
  PID:4668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4700 -ip 4700
1⤵
PID:3740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4700 -ip 4700
1⤵
PID:4304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4700 -ip 4700
1⤵
PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4700 -ip 4700
1⤵
PID:2976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4700 -ip 4700
1⤵
PID:4784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4700 -ip 4700
1⤵
PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4700 -ip 4700
1⤵
PID:1256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4700 -ip 4700
1⤵
PID:4780

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 520 -p 4564 -ip 4564
1⤵
PID:3800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4700 -ip 4700
1⤵
PID:2044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4700 -ip 4700
1⤵
PID:1860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 600 -p 4700 -ip 4700
1⤵
PID:3112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\89aiLif3\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\89aiLif3\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
memory/4564-141-0x00007FF8D0180000-0x00007FF8D0C41000-memory.dmp

Filesize
10.8MB

Download
memory/4564-140-0x000001BD24760000-0x000001BD248E0000-memory.dmp

Filesize
1.5MB

Download
memory/4564-142-0x00007FF8D0180000-0x00007FF8D0C41000-memory.dmp

Filesize
10.8MB

Download
memory/4700-135-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download
memory/4700-132-0x0000000000629000-0x000000000064F000-memory.dmp

Filesize
152KB

Download
memory/4700-143-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4700-134-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download
memory/4700-133-0x00000000022E0000-0x000000000231F000-memory.dmp

Filesize
252KB

Download
memory/4700-149-0x0000000000400000-0x00000000005A1000-memory.dmp

Filesize
1.6MB

Download