nymaim | 80e0fad3bd2c2640bcb4aa073e7195a8fac77ac92b1085ca71cf975da3de6f9d

Analysis

max time kernel
41s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/12/2022, 12:15

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General

Target
3a4fc843fea55ee700af9ca739e690e0.exe
Size 371KB
Sample221229-pfbgvsda29
SHA256 80e0fad3bd2c2640bcb4aa073e7195a8fac77ac92b1085ca71cf975da3de6f9d
MD5 3a4fc843fea55ee700af9ca739e690e0
SHA1 355974b4c3165312c59afda5f1f11224b73e25dc
SHA512 9d218a6f8f59674db9fa3ee433685b215cd8902eab33efb2dead60e0901be3a57199a4ee710b5ab2894f3cc241e591f05a78394f6089e8b36208ce4b91d6c6c9
SSDEEP 6144:KOUR7L0Nr4NBsR1JjXjOvlNW62F5grTPPw7n1HbwZoV0J:mBgUsRHgde5Iw7
MD5 SHA1 SHA512 SSDEEP

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
584	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
468	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	468	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 584	2044	3a4fc843fea55ee700af9ca739e690e0.exe	28
PID 2044 wrote to memory of 584	2044	3a4fc843fea55ee700af9ca739e690e0.exe	28
PID 2044 wrote to memory of 584	2044	3a4fc843fea55ee700af9ca739e690e0.exe	28
PID 2044 wrote to memory of 584	2044	3a4fc843fea55ee700af9ca739e690e0.exe	28
PID 584 wrote to memory of 468	584	cmd.exe	30
PID 584 wrote to memory of 468	584	cmd.exe	30
PID 584 wrote to memory of 468	584	cmd.exe	30
PID 584 wrote to memory of 468	584	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe
"C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:584
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:468

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/2044-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

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memory/2044-55-0x00000000005FA000-0x0000000000620000-memory.dmp

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memory/2044-56-0x0000000000250000-0x0000000000290000-memory.dmp

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memory/2044-57-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2044-59-0x00000000005FA000-0x0000000000620000-memory.dmp

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memory/2044-60-0x0000000000400000-0x0000000000462000-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