nymaim | 1a561c773b702d46a5136233cbdde4ed17cbc1621b1025ca49c668df7ec540de

Analysis

max time kernel
90s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 03:15

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 396KB
Sample221007-drw26abdf7
SHA256 1a561c773b702d46a5136233cbdde4ed17cbc1621b1025ca49c668df7ec540de
MD5 51a76a4caa19451877bfb75685947c67
SHA1 f85a3d259779fda536a707f296f02a286a4e000d
SHA512 d5537d8b48f5da60f10ab32546fdfc40aa66460e94a0d263c4fce550771caabe5b2f98a359e938ddca6b5e1f925136e2222830f1e187b0aa2c43e120fb471fd9
SSDEEP 6144:GJ6Lfeag3k1FxUrPlzYS1kY2s7VvXkuzbgwuQSFXwVfU:GwjdUrP1hkqJXkunnZud
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
2972	xDFAJj.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

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
3032	4324	WerFault.exe	77
1112	4324	WerFault.exe	77
1456	4324	WerFault.exe	77
4548	4324	WerFault.exe	77
3184	4324	WerFault.exe	77
3492	4324	WerFault.exe	77
2244	4324	WerFault.exe	77
868	4324	WerFault.exe	77
5048	4324	WerFault.exe	77

Kills process with taskkill 1 IoCs

evasion

pid	Process
1084	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1084	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 2972	4324	file.exe	104
PID 4324 wrote to memory of 2972	4324	file.exe	104
PID 4324 wrote to memory of 2972	4324	file.exe	104
PID 4324 wrote to memory of 3696	4324	file.exe	108
PID 4324 wrote to memory of 3696	4324	file.exe	108
PID 4324 wrote to memory of 3696	4324	file.exe	108
PID 3696 wrote to memory of 1084	3696	cmd.exe	110
PID 3696 wrote to memory of 1084	3696	cmd.exe	110
PID 3696 wrote to memory of 1084	3696	cmd.exe	110

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:4324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 456
  2⤵
  - Program crash
  PID:3032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 772
  2⤵
  - Program crash
  PID:1112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 800
  2⤵
  - Program crash
  PID:1456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 800
  2⤵
  - Program crash
  PID:4548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 792
  2⤵
  - Program crash
  PID:3184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 928
  2⤵
  - Program crash
  PID:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1020
  2⤵
  - Program crash
  PID:2244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1072
  2⤵
  - Program crash
  PID:868
- C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\xDFAJj.exe
  2⤵
  - Executes dropped EXE
  PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1444
  2⤵
  - Program crash
  PID:5048
- 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:3696
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4324 -ip 4324
1⤵
PID:3916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4324 -ip 4324
1⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4324 -ip 4324
1⤵
PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4324 -ip 4324
1⤵
PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4324 -ip 4324
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4324 -ip 4324
1⤵
PID:312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4324 -ip 4324
1⤵
PID:1408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4324 -ip 4324
1⤵
PID:2412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4324 -ip 4324
1⤵
PID:4540

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

xDFAJj.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\xDFAJj.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

xDFAJj.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\xDFAJj.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/4324-134-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4324-138-0x00000000006CD000-0x00000000006FE000-memory.dmp

Download

memory/4324-140-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4324-139-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/4324-132-0x00000000006CD000-0x00000000006FE000-memory.dmp

Download

memory/4324-145-0x00000000006CD000-0x00000000006FE000-memory.dmp

Download

memory/4324-146-0x0000000000400000-0x00000000004B0000-memory.dmp

Download

memory/4324-133-0x00000000020A0000-0x00000000020F3000-memory.dmp

Download