nymaim | 75969ec79b24f7cd86c4d37c523854e964d5e839704d5bb6fc0212b0b0556b35

Analysis

max time kernel
43s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16/09/2022, 08:26

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General

Target
file.exe
Size 357KB
Sample220916-kbvbysfbd5
SHA256 75969ec79b24f7cd86c4d37c523854e964d5e839704d5bb6fc0212b0b0556b35
MD5 d062e68b75c40ffc753c1d429d1f116c
SHA1 76a44ec789c35ce9a915df3b1aee99c7745fdf6c
SHA512 48eb44abc309ad31b78abe15c032b9119f234379fd3af129692b81263428302d82b31ad0ee9db7283a385b98b0059dda47347b9ff6c7007b6cdd35345491865f
SSDEEP 6144:vt6Af8ngeEnuxSvjtaHE+DM3Fd/InqD0iOvniga:vpfWge0zjtaHDDM33IZi6i
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

Deletes itself 1 IoCs

pid	Process
1640	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
568	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	568	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 1640	1212	file.exe	29
PID 1212 wrote to memory of 1640	1212	file.exe	29
PID 1212 wrote to memory of 1640	1212	file.exe	29
PID 1212 wrote to memory of 1640	1212	file.exe	29
PID 1640 wrote to memory of 568	1640	cmd.exe	31
PID 1640 wrote to memory of 568	1640	cmd.exe	31
PID 1640 wrote to memory of 568	1640	cmd.exe	31
PID 1640 wrote to memory of 568	1640	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1212-54-0x0000000075E11000-0x0000000075E13000-memory.dmp

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memory/1212-55-0x00000000002AB000-0x00000000002D3000-memory.dmp

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memory/1212-56-0x0000000000460000-0x00000000004A3000-memory.dmp

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memory/1212-57-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/1212-59-0x00000000002AB000-0x00000000002D3000-memory.dmp

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memory/1212-60-0x0000000000400000-0x000000000045F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads