nymaim | 17c080f58e43f652fa72ccb3c60ce03228d6c843362cfe716c2873e6af5e8ea7

Analysis

max time kernel
44s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
17/09/2022, 11:39

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General

Target
file.exe
Size 381KB
Sample220917-nr99wsdfem
SHA256 17c080f58e43f652fa72ccb3c60ce03228d6c843362cfe716c2873e6af5e8ea7
MD5 4202387c9a3f76bcf0455c9af60ef7e8
SHA1 d24d471a1f77a117c7a0b634bfcb9a36acc606e6
SHA512 841040487ee26277588a1ddaa814b4e285d1be264a47a9074f39b1ca16b6724f4ab823acd0380885a1d8b9c9b743fcbf98a479bea40f5c76d667a7d2fbb54cc3
SSDEEP 6144:PoFoLOLdOjABl/v8xfWrvx0TS3CRRoj7Z7aE070pnigabwVfs:PoGKLd8ABl/v8xfy+TvRC36Oi
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
372	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
1440	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1440	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 372	1056	file.exe	28
PID 1056 wrote to memory of 372	1056	file.exe	28
PID 1056 wrote to memory of 372	1056	file.exe	28
PID 1056 wrote to memory of 372	1056	file.exe	28
PID 372 wrote to memory of 1440	372	cmd.exe	30
PID 372 wrote to memory of 1440	372	cmd.exe	30
PID 372 wrote to memory of 1440	372	cmd.exe	30
PID 372 wrote to memory of 1440	372	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:1056
- 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:372
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1440

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/1056-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

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memory/1056-56-0x0000000000220000-0x0000000000262000-memory.dmp

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memory/1056-55-0x000000000056B000-0x0000000000592000-memory.dmp

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memory/1056-57-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/1056-59-0x000000000056B000-0x0000000000592000-memory.dmp

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memory/1056-60-0x0000000000400000-0x0000000000465000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads