nymaim | f3231a039f3898bbff37d1cbe3c7c60bf1701d05eab14f69cb0b8aa40e420f79

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/10/2022, 11:05

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General

Target

file.exe
Size

396KB
MD5

ba9783b9a49d73e4c499b416394c3a68
SHA1

8b3e1811acc2f100b034de9cb79f4a3e57378fde
SHA256

f3231a039f3898bbff37d1cbe3c7c60bf1701d05eab14f69cb0b8aa40e420f79
SHA512

93b59e6393c3f6ca8cbd876230f26c1dd7e6ec4d4f97acb6fa2853c5596ce5b295d78cb5038a39c82c56c7a12fdb4ae6e122aa08ae56bf55d5651ac28d3f9516
SSDEEP

6144:PemQju+KCWSg9ZszB5KyHqkAL1+4Ed/xSgE2BuzbgwuMWwVfs:P0qwLOZWuyHqJ+57SQBunnO

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
1880	mL9TJEm.exe

Deletes itself 1 IoCs

pid	Process
1804	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1652	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
864	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1652	file.exe
1652	file.exe
1652	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	864	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 1880	1652	file.exe	30
PID 1652 wrote to memory of 1880	1652	file.exe	30
PID 1652 wrote to memory of 1880	1652	file.exe	30
PID 1652 wrote to memory of 1880	1652	file.exe	30
PID 1652 wrote to memory of 1804	1652	file.exe	31
PID 1652 wrote to memory of 1804	1652	file.exe	31
PID 1652 wrote to memory of 1804	1652	file.exe	31
PID 1652 wrote to memory of 1804	1652	file.exe	31
PID 1804 wrote to memory of 864	1804	cmd.exe	33
PID 1804 wrote to memory of 864	1804	cmd.exe	33
PID 1804 wrote to memory of 864	1804	cmd.exe	33
PID 1804 wrote to memory of 864	1804	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:1652
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mL9TJEm.exe
  2⤵
  - Executes dropped EXE
  PID:1880
- 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:1804
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:864

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

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Downloads

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mL9TJEm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mL9TJEm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1652-55-0x00000000005BB000-0x00000000005EC000-memory.dmp

Filesize
196KB

Download
memory/1652-54-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

Download
memory/1652-56-0x0000000000220000-0x0000000000273000-memory.dmp

Filesize
332KB

Download
memory/1652-61-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1652-65-0x00000000005BB000-0x00000000005EC000-memory.dmp

Filesize
196KB

Download
memory/1652-66-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1652-68-0x00000000005BB000-0x00000000005EC000-memory.dmp

Filesize
196KB

Download
memory/1652-69-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1652-57-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download