539fea9977fd379f54dc54c1a233f4080e50d7332db93e5a849b828918f0da57

Analysis

max time kernel
47s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 15:17

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General

Target

MYFILE.lnk
Size

2KB
MD5

9e01da4e538784bc9e649f8f39f01187
SHA1

07d4f50a84c027187358a20dcc2f78b78b2b531e
SHA256

076dd53597d7464f38e16458d2a23225c7c8ccde3890de7c40e1f1a7c945ba92
SHA512

b397b46ce58946590ee5d0203f0d214d189994b030f387c84f262105fad788805f4d3e9a4807677cff88311f7014688cd348f7d581165affcd74599d9ae0a9fd

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
368	trink.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 1640	1380	cmd.exe	28
PID 1380 wrote to memory of 1640	1380	cmd.exe	28
PID 1380 wrote to memory of 1640	1380	cmd.exe	28
PID 1640 wrote to memory of 1472	1640	cmd.exe	30
PID 1640 wrote to memory of 1472	1640	cmd.exe	30
PID 1640 wrote to memory of 1472	1640	cmd.exe	30
PID 1640 wrote to memory of 1620	1640	cmd.exe	31
PID 1640 wrote to memory of 1620	1640	cmd.exe	31
PID 1640 wrote to memory of 1620	1640	cmd.exe	31
PID 1640 wrote to memory of 560	1640	cmd.exe	33
PID 1640 wrote to memory of 560	1640	cmd.exe	33
PID 1640 wrote to memory of 560	1640	cmd.exe	33
PID 1640 wrote to memory of 296	1640	cmd.exe	32
PID 1640 wrote to memory of 296	1640	cmd.exe	32
PID 1640 wrote to memory of 296	1640	cmd.exe	32
PID 1640 wrote to memory of 368	1640	cmd.exe	34
PID 1640 wrote to memory of 368	1640	cmd.exe	34
PID 1640 wrote to memory of 368	1640	cmd.exe	34

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\MYFILE.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\trichromatic.cmd" "
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo f"
    3⤵
    PID:1472
- - C:\Windows\system32\xcopy.exe
    xcopy C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\trink.exe /h /s /e
    3⤵
    PID:1620
- - C:\Windows\system32\xcopy.exe
    xcopy templates786.png C:\Users\Admin\AppData\Local\Temp\13471.29296 /h /s /e
    3⤵
    PID:296
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo f"
    3⤵
    PID:560
- - C:\Users\Admin\AppData\Local\Temp\trink.exe
    C:\Users\Admin\AppData\Local\Temp\trink.exe C:\Users\Admin\AppData\Local\Temp\13471.29296,#1
    3⤵
    - Executes dropped EXE
    PID:368

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\Local\Temp\trink.exe

Filesize
44KB

MD5
dd81d91ff3b0763c392422865c9ac12e

SHA1
963b55acc8c566876364716d5aafa353995812a8

SHA256
f5691b8f200e3196e6808e932630e862f8f26f31cd949981373f23c9d87db8b9

SHA512
8a5036ccab9c9e71deb4ecb9598528ca19c2d697a836846d23e1547b24172fa236a798092c7db676929abff830e40f52ce8f3b3bdd8d4c2553d7c021fceaf120

Download Submit
\Users\Admin\AppData\Local\Temp\trink.exe

Filesize
44KB

MD5
dd81d91ff3b0763c392422865c9ac12e

SHA1
963b55acc8c566876364716d5aafa353995812a8

SHA256
f5691b8f200e3196e6808e932630e862f8f26f31cd949981373f23c9d87db8b9

SHA512
8a5036ccab9c9e71deb4ecb9598528ca19c2d697a836846d23e1547b24172fa236a798092c7db676929abff830e40f52ce8f3b3bdd8d4c2553d7c021fceaf120

Download Submit
memory/1380-54-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

Filesize
8KB

Download
memory/1640-144-0x0000000001F80000-0x0000000001F90000-memory.dmp

Filesize
64KB

Download