nymaim | 81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22

Analysis

Target

2f5b19f3196cf8903daa3de2163e56bc.exe
Size

369KB
MD5

2f5b19f3196cf8903daa3de2163e56bc
SHA1

ddff7f0771687bb3632da27c7e46dcd7ef167e2e
SHA256

81a110de18613503c0f3075da56cdbe363091cebcd8c52423ac1d63aa791bb22
SHA512

ba1951fbc6c18d6fe247d2e5269156db8619f483b1d5796b1f084bb92e760cbe9b233e11c688919b3580e8853baede4b3bdb1c848eb23c20afa3a753f927b8d2

Score

10^/10

nymaim trojan

Family

nymaim

37.0.8.39

31.210.20.149

212.192.241.16

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Deletes itself 1 IoCs

Processes:

cmd.exe

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

Processes:

taskkill.exe

pid process

588 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 588 taskkill.exe

pid	process
580	cmd.exe

pid	process
588	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	588	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2f5b19f3196cf8903daa3de2163e56bc.execmd.exe

description	pid	process	target process
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	cmd.exe
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	cmd.exe
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	cmd.exe
PID 1992 wrote to memory of 580	1992	2f5b19f3196cf8903daa3de2163e56bc.exe	cmd.exe
PID 580 wrote to memory of 588	580	cmd.exe	taskkill.exe
PID 580 wrote to memory of 588	580	cmd.exe	taskkill.exe
PID 580 wrote to memory of 588	580	cmd.exe	taskkill.exe
PID 580 wrote to memory of 588	580	cmd.exe	taskkill.exe

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

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

memory/580-58-0x0000000000000000-mapping.dmp

Download
memory/588-60-0x0000000000000000-mapping.dmp

Download
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