nymaim | 81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-06-2022 11:08

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General

Target

2f5b19f3196cf8903daa3de2163e56bc.exe
Size

369KB
MD5

2f5b19f3196cf8903daa3de2163e56bc
SHA1

ddff7f0771687bb3632da27c7e46dcd7ef167e2e
SHA256

81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22
SHA512

ba1951fbc6c18d6fe247d2e5269156db8619f483b1d5796b1f084bb92e760cbe9b233e11c688919b3580e8853baede4b3bdb1c848eb23c20afa3a753f927b8d2

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

37.0.8.39

31.210.20.149

212.192.241.16

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
580	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
588	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	588	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	30
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	30
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	30
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	30
PID 580 wrote to memory of 588	580	cmd.exe	32
PID 580 wrote to memory of 588	580	cmd.exe	32
PID 580 wrote to memory of 588	580	cmd.exe	32
PID 580 wrote to memory of 588	580	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe
"C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "2f5b19f3196cf8903daa3de2163e56bc.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2f5b19f3196cf8903daa3de2163e56bc.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "2f5b19f3196cf8903daa3de2163e56bc.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:588

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/1992-54-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download
memory/1992-55-0x0000000000D0B000-0x0000000000D31000-memory.dmp

Filesize
152KB

Download
memory/1992-56-0x0000000000220000-0x000000000025F000-memory.dmp

Filesize
252KB

Download
memory/1992-57-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download
memory/1992-59-0x0000000000D0B000-0x0000000000D31000-memory.dmp

Filesize
152KB

Download
memory/1992-61-0x0000000000400000-0x0000000000B50000-memory.dmp

Filesize
7.3MB

Download