nymaim | 385c9c32cf0f1661f1831b5fabe93f41ac609b31eaea300c327a71de0bfdcbcc

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
15-09-2022 18:15

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General

Target

1aee5b97c777fd7c7db6ba98974ddc49.exe
Size

340KB
MD5

1aee5b97c777fd7c7db6ba98974ddc49
SHA1

b6e8bb3152c5e541afd1725da98377ae2def1b9b
SHA256

385c9c32cf0f1661f1831b5fabe93f41ac609b31eaea300c327a71de0bfdcbcc
SHA512

87547ecbe9587a10a6a759548ae76913c6756c9f88a34f62487a9584410a29a25e527a184f5fd6d68ec6cc56d22bda621262f820800d45ecf91eec658dd22655
SSDEEP

6144:k/TL+BteH67joN07TEH3qx2xcT4Zx7u3OYm4k6c0t+niga:k76BtboOwH3qx2RCOjkt+i

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
1924	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
1004	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1004	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 1924	752	1aee5b97c777fd7c7db6ba98974ddc49.exe	30
PID 752 wrote to memory of 1924	752	1aee5b97c777fd7c7db6ba98974ddc49.exe	30
PID 752 wrote to memory of 1924	752	1aee5b97c777fd7c7db6ba98974ddc49.exe	30
PID 752 wrote to memory of 1924	752	1aee5b97c777fd7c7db6ba98974ddc49.exe	30
PID 1924 wrote to memory of 1004	1924	cmd.exe	32
PID 1924 wrote to memory of 1004	1924	cmd.exe	32
PID 1924 wrote to memory of 1004	1924	cmd.exe	32
PID 1924 wrote to memory of 1004	1924	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\1aee5b97c777fd7c7db6ba98974ddc49.exe
"C:\Users\Admin\AppData\Local\Temp\1aee5b97c777fd7c7db6ba98974ddc49.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "1aee5b97c777fd7c7db6ba98974ddc49.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1aee5b97c777fd7c7db6ba98974ddc49.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "1aee5b97c777fd7c7db6ba98974ddc49.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1004

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/752-54-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/752-55-0x000000000056E000-0x0000000000595000-memory.dmp

Filesize
156KB

Download
memory/752-56-0x0000000000220000-0x0000000000263000-memory.dmp

Filesize
268KB

Download
memory/752-57-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/752-59-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/752-60-0x000000000056E000-0x0000000000595000-memory.dmp

Filesize
156KB

Download