nymaim | fa180d788066c58a8bcb27729bbe5bdcba7887b5eacff50effc3af1206fd4eee

Analysis

max time kernel
45s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
17-09-2022 07:58

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General

Target

file.exe
Size

381KB
MD5

84a4e8454dd3e6f9e59955463b91e4f1
SHA1

d5dc4ea8cafb441e68e8c697911d705941475aec
SHA256

fa180d788066c58a8bcb27729bbe5bdcba7887b5eacff50effc3af1206fd4eee
SHA512

8da6f5dcb65ade1ce1aff7e7178bba60369d8332f012a61e164da5caea28aaea1fa5bc29eb02466b265c00f14e7c8a8cf94f4ee026e3ba075c4a35aef57bf996
SSDEEP

6144:0Oy30LzDKSW5Lv1rhRqeXbxbtQKW1GUXWPbFGS0ym/nigabwVf:0T30XDK5L1rhAgxbnZWXi

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
1624	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
1832	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1624	1464	file.exe	28
PID 1464 wrote to memory of 1624	1464	file.exe	28
PID 1464 wrote to memory of 1624	1464	file.exe	28
PID 1464 wrote to memory of 1624	1464	file.exe	28
PID 1624 wrote to memory of 1832	1624	cmd.exe	30
PID 1624 wrote to memory of 1832	1624	cmd.exe	30
PID 1624 wrote to memory of 1832	1624	cmd.exe	30
PID 1624 wrote to memory of 1832	1624	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:1464
- 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:1624
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1832

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/1464-54-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1464-55-0x000000000064B000-0x0000000000672000-memory.dmp

Filesize
156KB

Download
memory/1464-56-0x0000000000220000-0x0000000000262000-memory.dmp

Filesize
264KB

Download
memory/1464-57-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1464-59-0x000000000064B000-0x0000000000672000-memory.dmp

Filesize
156KB

Download
memory/1464-60-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download