nymaim | 29819b55e60be88f80f634504f1981e9a6694aa8c8c9d190f6d7b539a292e7e1

Analysis

max time kernel
38s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28-10-2022 04:45

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General

Target

file.exe
Size

336KB
MD5

dd0ca0a8da1c8fb72b1ad80dc78c3ed2
SHA1

616f2bc9d06cbd7a1a1a88298c7eb71ec1d67a01
SHA256

29819b55e60be88f80f634504f1981e9a6694aa8c8c9d190f6d7b539a292e7e1
SHA512

96d7707adcbc1364e345e23420435bec9c83f1a50a886b5018e71e2758b305ba15692632747701558a24625719f7e8e1d9ce6ea8d4f469b1ff9a4767a905b012
SSDEEP

6144:gk4KHPL+kIvbbucJ+pjzqyYf58JsUQ5xetReNfCTj:gk4KHPKHvnucJuBo0sv5xetiqTj

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
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
912	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	912	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1932	1688	file.exe	29
PID 1688 wrote to memory of 1932	1688	file.exe	29
PID 1688 wrote to memory of 1932	1688	file.exe	29
PID 1688 wrote to memory of 1932	1688	file.exe	29
PID 1932 wrote to memory of 912	1932	cmd.exe	31
PID 1932 wrote to memory of 912	1932	cmd.exe	31
PID 1932 wrote to memory of 912	1932	cmd.exe	31
PID 1932 wrote to memory of 912	1932	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1688
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:912

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/1688-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1688-56-0x0000000000250000-0x0000000000290000-memory.dmp

Filesize
256KB

Download
memory/1688-55-0x0000000002DFA000-0x0000000002E20000-memory.dmp

Filesize
152KB

Download
memory/1688-57-0x0000000000400000-0x0000000002C41000-memory.dmp

Filesize
40.3MB

Download
memory/1688-59-0x0000000002DFA000-0x0000000002E20000-memory.dmp

Filesize
152KB

Download
memory/1688-61-0x0000000000400000-0x0000000002C41000-memory.dmp

Filesize
40.3MB

Download