nymaim | 5d680b566b484f1d7ddf787462139c16ccd2ca1aeb3ecc4167a95c2cdd80809c

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
15/09/2022, 23:41

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General

Target
file.exe
Size 371KB
Sample220915-3pegrsecg2
SHA256 5d680b566b484f1d7ddf787462139c16ccd2ca1aeb3ecc4167a95c2cdd80809c
MD5 a918ecf88334f765084431fcbebc866c
SHA1 b080412c68ef518a8090570757aff0fc07c63719
SHA512 c69e546e1d26e1d00d9c9d503eccd0a092338f641494e680599a08025ba15276bfa73230a8597a2995f9a810587182106115301eb0d9870d5db9b3a82ddf3825
SSDEEP 6144:SMeinuTYvA6moH8hEuMeNcGy9WrPbaGrWh9Q/y9Mfi4fvTSEhbqbn30uIL:SMXuTGA3c8hTcGy9WrPOGrU9QqYi4fvg
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
880	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
664	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	664	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 880	2044	file.exe	28
PID 2044 wrote to memory of 880	2044	file.exe	28
PID 2044 wrote to memory of 880	2044	file.exe	28
PID 2044 wrote to memory of 880	2044	file.exe	28
PID 880 wrote to memory of 664	880	cmd.exe	30
PID 880 wrote to memory of 664	880	cmd.exe	30
PID 880 wrote to memory of 664	880	cmd.exe	30
PID 880 wrote to memory of 664	880	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:2044
- 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:880
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:664

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/2044-55-0x000000000073B000-0x0000000000762000-memory.dmp

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memory/2044-56-0x0000000000220000-0x0000000000263000-memory.dmp

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memory/2044-57-0x0000000000400000-0x00000000005B9000-memory.dmp

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memory/2044-59-0x0000000000400000-0x00000000005B9000-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