nymaim | 1faf2a191de3233262fab81e8ffb9a58314019b06f76fb43798bd194897a3935

Analysis

max time kernel
42s
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, 16:59

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General

Target

file.exe
Size

392KB
MD5

3e74f8779fd525355e262cca7d5197ea
SHA1

a7c8b45b9695e485d276ff2f45897722168abf35
SHA256

1faf2a191de3233262fab81e8ffb9a58314019b06f76fb43798bd194897a3935
SHA512

60ffecf1661de9a700d30b6e7de653c236eef2f8c4605f6a0810804b7c4dc91c8e8ad746ae007b0f5c2fd5377e10cadbc52657c3de071bb0147e3b5503da1167
SSDEEP

6144:x5WhuS3kEPa/aW8W7OtTL+EDV4WafP9dhwQKf0PBV3nigabwVf:x5OuS3yFrEDV4NfCQB73i

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
1180	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
1688	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 1180	2012	file.exe	28
PID 2012 wrote to memory of 1180	2012	file.exe	28
PID 2012 wrote to memory of 1180	2012	file.exe	28
PID 2012 wrote to memory of 1180	2012	file.exe	28
PID 1180 wrote to memory of 1688	1180	cmd.exe	30
PID 1180 wrote to memory of 1688	1180	cmd.exe	30
PID 1180 wrote to memory of 1688	1180	cmd.exe	30
PID 1180 wrote to memory of 1688	1180	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2012
- 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:1180
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1688

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/2012-54-0x0000000075E81000-0x0000000075E83000-memory.dmp

Filesize
8KB

Download
memory/2012-56-0x0000000000220000-0x0000000000262000-memory.dmp

Filesize
264KB

Download
memory/2012-55-0x00000000008CB000-0x00000000008F2000-memory.dmp

Filesize
156KB

Download
memory/2012-57-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2012-59-0x00000000008CB000-0x00000000008F2000-memory.dmp

Filesize
156KB

Download
memory/2012-60-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download