nymaim | f3580ea4cd6f27353a84ae15f6086b7c5098343e43afdd8dc3e16e9d56fd701b

Analysis

max time kernel
52s
max time network
55s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/10/2022, 18:47

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 396KB
Sample221007-xe7snsddbm
SHA256 f3580ea4cd6f27353a84ae15f6086b7c5098343e43afdd8dc3e16e9d56fd701b
MD5 61a7cc6fe63e8682a691adfd1fbfdce1
SHA1 19000d00d1a1dfc6fa142a0508c5f54d1c8e0932
SHA512 b78af156ac6283d1da32df063105bbf19b3a8be55423ec33f6cd259d68e5002f579b3cfbc5c6c8915ffe46ddb9b854bc1b19006700beae8d719758b0d0a352de
SSDEEP 6144:DTZWnRfq+rI1aVIQXJLrbZ5Iws/PvhWd5bXe36HupZhD7Uuzbgwu38wVfs:DTgRfTI1GXJLrDIZ/PwdNNO9D7Uunn/
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

Executes dropped EXE 1 IoCs

pid	Process
1276	1O5mz.exe

Deletes itself 1 IoCs

pid	Process
984	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1980	file.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
1900	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1980	file.exe
1980	file.exe
1980	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1276	1980	file.exe	30
PID 1980 wrote to memory of 1276	1980	file.exe	30
PID 1980 wrote to memory of 1276	1980	file.exe	30
PID 1980 wrote to memory of 1276	1980	file.exe	30
PID 1980 wrote to memory of 984	1980	file.exe	31
PID 1980 wrote to memory of 984	1980	file.exe	31
PID 1980 wrote to memory of 984	1980	file.exe	31
PID 1980 wrote to memory of 984	1980	file.exe	31
PID 984 wrote to memory of 1900	984	cmd.exe	33
PID 984 wrote to memory of 1900	984	cmd.exe	33
PID 984 wrote to memory of 1900	984	cmd.exe	33
PID 984 wrote to memory of 1900	984	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1O5mz.exe
  2⤵
  - Executes dropped EXE
  PID:1276
- 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:984
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1900

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

Loading Replay Monitor...

Downloads

1O5mz.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1O5mz.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

1O5mz.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\1O5mz.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1980-55-0x000000000063B000-0x000000000066C000-memory.dmp

Download

memory/1980-54-0x0000000076031000-0x0000000076033000-memory.dmp

Download

memory/1980-61-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1980-65-0x000000000063B000-0x000000000066C000-memory.dmp

Download

memory/1980-66-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1980-57-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1980-68-0x000000000063B000-0x000000000066C000-memory.dmp

Download

memory/1980-69-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1980-56-0x0000000000220000-0x0000000000273000-memory.dmp

Download