d65ffb5f3e5465b0cfb98d93a1d91e76299f1cceeacfb1e6234bddd4c28dc448

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
02/08/2023, 16:39

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General

Target

39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
Size

64KB
MD5

39748e0438afc6561c3a3ab81c13f637
SHA1

eda7568921f78e289b2f34df8a18b930fe6f1e1d
SHA256

d65ffb5f3e5465b0cfb98d93a1d91e76299f1cceeacfb1e6234bddd4c28dc448
SHA512

797d2a2208358f3220ba2ecb21d664ae1c692e8c89bf02ed10be30e4a2ccacbaccd590d7aa8d5ff6dd0772de7847a79d80f670c7bcef8f2cc9dfb15b613c5505
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTOOZs3O:T6a+rdOOtEvwDpjNr

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
472	asih.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2744-133-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231ba-146.dat	upx
behavioral2/files/0x00070000000231ba-148.dat	upx
behavioral2/files/0x00070000000231ba-149.dat	upx
behavioral2/memory/2744-150-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/472-159-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 472	2744	39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe	80
PID 2744 wrote to memory of 472	2744	39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe	80
PID 2744 wrote to memory of 472	2744	39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe	80

C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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\asih.exe

Filesize
64KB

MD5
e347073d1b089de2ce6351dcb83e7d69

SHA1
dd6e736fd92fd2c47466371e7bb43cda89b9b713

SHA256
802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

SHA512
767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
64KB

MD5
e347073d1b089de2ce6351dcb83e7d69

SHA1
dd6e736fd92fd2c47466371e7bb43cda89b9b713

SHA256
802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

SHA512
767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
64KB

MD5
e347073d1b089de2ce6351dcb83e7d69

SHA1
dd6e736fd92fd2c47466371e7bb43cda89b9b713

SHA256
802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

SHA512
767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

Download Submit
memory/472-153-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/472-152-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/472-159-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2744-133-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2744-134-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2744-135-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2744-136-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2744-150-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download