nymaim | 6bef62653d807b4916c39deb44dcc47e908158a74439903172583c8685cf2077

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16/09/2022, 10:02

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General

Target

file.exe
Size

357KB
MD5

90da1762f13362256f04cb65a89eef8c
SHA1

9ff737f33233ce5049bd663a190685bd0286c406
SHA256

6bef62653d807b4916c39deb44dcc47e908158a74439903172583c8685cf2077
SHA512

9f084e3e24f782c134464db127af79ad1eec166101bdda5c32565835a92e6ba63b789a56c5218b2c7c7d7c7220850836da7649729c6899b2ba5d44d3667a2192
SSDEEP

6144:Fs2ZQfZusO6BG6GUjvIH6rvmoqU76E0Nniga:FnZnsONuvs6TF74Ni

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
1500	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
544	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	544	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 1500	1652	file.exe	30
PID 1652 wrote to memory of 1500	1652	file.exe	30
PID 1652 wrote to memory of 1500	1652	file.exe	30
PID 1652 wrote to memory of 1500	1652	file.exe	30
PID 1500 wrote to memory of 544	1500	cmd.exe	32
PID 1500 wrote to memory of 544	1500	cmd.exe	32
PID 1500 wrote to memory of 544	1500	cmd.exe	32
PID 1500 wrote to memory of 544	1500	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- 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:1500
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:544

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

Replay Monitor

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Downloads

memory/1652-54-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

Download
memory/1652-56-0x00000000002C0000-0x0000000000303000-memory.dmp

Filesize
268KB

Download
memory/1652-55-0x000000000050B000-0x0000000000533000-memory.dmp

Filesize
160KB

Download
memory/1652-57-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1652-59-0x000000000050B000-0x0000000000533000-memory.dmp

Filesize
160KB

Download
memory/1652-60-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download