nymaim | f21083af0d6dc01f9b3cc77b8e84301e67755879f97f81b842c6a4732ea6ccb4

Analysis

max time kernel
40s
max time network
43s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26/10/2022, 21:10

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General

Target

014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe
Size

305KB
MD5

a39bd865d6df97f9f541a76ff327ef72
SHA1

e9d5703070f46de97465e91453da6bb9cdd30862
SHA256

014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d
SHA512

d79e1c8b7d1534fa0080511e8748590831ac016fa908c05e5cd97837ef4c5ff981f83445a36acddf787fda554e6586f00ca6c37a9f651f5421d03322b9c0bd12
SSDEEP

6144:7STmTNLwS0eZbNFsFhZSf3H2wNffWMGsRXcTG1Y4:7STCNMpezgEH2wN3JGrc

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

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
1572	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 1504 wrote to memory of 1572	1504	014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe	28
PID 1504 wrote to memory of 1572	1504	014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe	28
PID 1504 wrote to memory of 1572	1504	014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe	28
PID 1504 wrote to memory of 1572	1504	014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe	28
PID 1572 wrote to memory of 588	1572	cmd.exe	30
PID 1572 wrote to memory of 588	1572	cmd.exe	30
PID 1572 wrote to memory of 588	1572	cmd.exe	30
PID 1572 wrote to memory of 588	1572	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe
"C:\Users\Admin\AppData\Local\Temp\014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "014445a124470594d7a5dd08add6829113337b2923d8ebd730fcb4b5f551954d.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/1504-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1504-55-0x000000000063B000-0x0000000000662000-memory.dmp

Filesize
156KB

Download
memory/1504-56-0x00000000002A0000-0x00000000002E0000-memory.dmp

Filesize
256KB

Download
memory/1504-57-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/1504-59-0x000000000063B000-0x0000000000662000-memory.dmp

Filesize
156KB

Download
memory/1504-60-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download