nymaim | 81c84e6f68c115dcceb202caebf3da740f2b6da10658cbf29fb425706bb6f07b

Analysis

max time kernel
41s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16/09/2022, 11:09

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General

Target
file.exe
Size 358KB
Sample220916-m84yrsffa2
SHA256 81c84e6f68c115dcceb202caebf3da740f2b6da10658cbf29fb425706bb6f07b
MD5 568cd26254b7f665fd1cf7efb4c464e7
SHA1 2c18bd938dd701f9cd4e5a252310fa1abff8e6d4
SHA512 68b9a9d1269307fcd950886eee9727bc08fdcf40dfc2a60d68aa6fde2582a44c6932d02b3548d66282a15c4cafd7b2fa112a0ee77f4b5e7008f919707847665c
SSDEEP 6144:L0AEF4C6jb1w+FrqZ/WP+0NzFoasR6E04niga:LthC6jBvFro+PnSRRY4i
MD5 SHA1 SHA512 SSDEEP

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
1680	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
1116	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 1680	1248	file.exe	28
PID 1248 wrote to memory of 1680	1248	file.exe	28
PID 1248 wrote to memory of 1680	1248	file.exe	28
PID 1248 wrote to memory of 1680	1248	file.exe	28
PID 1680 wrote to memory of 1116	1680	cmd.exe	30
PID 1680 wrote to memory of 1116	1680	cmd.exe	30
PID 1680 wrote to memory of 1116	1680	cmd.exe	30
PID 1680 wrote to memory of 1116	1680	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1116

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

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Downloads

memory/1248-54-0x0000000075351000-0x0000000075353000-memory.dmp

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memory/1248-55-0x000000000026B000-0x0000000000293000-memory.dmp

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memory/1248-56-0x0000000000460000-0x00000000004A3000-memory.dmp

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memory/1248-57-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/1248-59-0x000000000026B000-0x0000000000293000-memory.dmp

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memory/1248-60-0x0000000000400000-0x000000000045F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads