nymaim | f3580ea4cd6f27353a84ae15f6086b7c5098343e43afdd8dc3e16e9d56fd701b

Analysis

max time kernel
140s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 18:47

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 396KB
Sample221007-xe7snsddbm
SHA256 f3580ea4cd6f27353a84ae15f6086b7c5098343e43afdd8dc3e16e9d56fd701b
MD5 61a7cc6fe63e8682a691adfd1fbfdce1
SHA1 19000d00d1a1dfc6fa142a0508c5f54d1c8e0932
SHA512 b78af156ac6283d1da32df063105bbf19b3a8be55423ec33f6cd259d68e5002f579b3cfbc5c6c8915ffe46ddb9b854bc1b19006700beae8d719758b0d0a352de
SSDEEP 6144:DTZWnRfq+rI1aVIQXJLrbZ5Iws/PvhWd5bXe36HupZhD7Uuzbgwu38wVfs:DTgRfTI1GXJLrDIZ/PwdNNO9D7Uunn/
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

Executes dropped EXE 1 IoCs

pid	Process
3664	N1hdKrDf.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 9 IoCs

pid	pid_target	Process	procid_target
3348	848	WerFault.exe	82
4812	848	WerFault.exe	82
2448	848	WerFault.exe	82
4688	848	WerFault.exe	82
1224	848	WerFault.exe	82
1440	848	WerFault.exe	82
3588	848	WerFault.exe	82
1944	848	WerFault.exe	82
2088	848	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
3836	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
848	file.exe
848	file.exe
848	file.exe
848	file.exe
848	file.exe
848	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3836	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 3664	848	file.exe	101
PID 848 wrote to memory of 3664	848	file.exe	101
PID 848 wrote to memory of 3664	848	file.exe	101
PID 848 wrote to memory of 3344	848	file.exe	111
PID 848 wrote to memory of 3344	848	file.exe	111
PID 848 wrote to memory of 3344	848	file.exe	111
PID 3344 wrote to memory of 3836	3344	cmd.exe	113
PID 3344 wrote to memory of 3836	3344	cmd.exe	113
PID 3344 wrote to memory of 3836	3344	cmd.exe	113

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 use of WriteProcessMemory
PID:848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 452
  2⤵
  - Program crash
  PID:3348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 772
  2⤵
  - Program crash
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 780
  2⤵
  - Program crash
  PID:2448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 792
  2⤵
  - Program crash
  PID:4688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 784
  2⤵
  - Program crash
  PID:1224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 928
  2⤵
  - Program crash
  PID:1440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 932
  2⤵
  - Program crash
  PID:3588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 1048
  2⤵
  - Program crash
  PID:1944
- C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\N1hdKrDf.exe
  2⤵
  - Executes dropped EXE
  PID:3664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 1456
  2⤵
  - Program crash
  PID:2088
- 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:3344
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 848 -ip 848
1⤵
PID:4256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 848 -ip 848
1⤵
PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 848 -ip 848
1⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 848 -ip 848
1⤵
PID:4704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 848 -ip 848
1⤵
PID:5028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 848 -ip 848
1⤵
PID:1448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 848 -ip 848
1⤵
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 848 -ip 848
1⤵
PID:3860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 848 -ip 848
1⤵
PID:3116

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

Loading Replay Monitor...

Downloads

N1hdKrDf.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\N1hdKrDf.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

N1hdKrDf.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\N1hdKrDf.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/848-145-0x00000000005AD000-0x00000000005DE000-memory.dmp

Download

memory/848-133-0x0000000000510000-0x0000000000563000-memory.dmp

Download

memory/848-134-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/848-146-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/848-138-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/848-142-0x00000000005AD000-0x00000000005DE000-memory.dmp

Download

memory/848-143-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/848-132-0x00000000005AD000-0x00000000005DE000-memory.dmp

Download