488443d4a0d525793919f36e7a8960428d44713e56bb4f39616fe7aff36ef031

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2023, 15:13

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General

Target

67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe
Size

108KB
MD5

67b6cb721bbc9e5cc5bf7655f03133f9
SHA1

2d8144632c83e2e630422dc5faf7c3390180159b
SHA256

488443d4a0d525793919f36e7a8960428d44713e56bb4f39616fe7aff36ef031
SHA512

e6502a9b9b7a35632b28594c122b6d325ef60ff6cf385f1f97d2fab11e15e594512a06c428789fa4d0a803976abbff9a3a001b532e69ab78c4d31182fe2065cf
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgp3ft:T6a+rdOOtEvwDpjLzo

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3700	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2852-133-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231a7-146.dat	upx
behavioral2/files/0x00070000000231a7-149.dat	upx
behavioral2/files/0x00070000000231a7-148.dat	upx
behavioral2/memory/2852-150-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3700-158-0x0000000000500000-0x0000000000510000-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 2852 wrote to memory of 3700	2852	67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe	82
PID 2852 wrote to memory of 3700	2852	67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe	82
PID 2852 wrote to memory of 3700	2852	67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe	82

C:\Users\Admin\AppData\Local\Temp\67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\67b6cb721bbc9e5cc5bf7655f03133f9_cryptolocker_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3700

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
108KB

MD5
a09bf50426f12f2f5eff149c0eaf1ca5

SHA1
33f87c48eff6cdbfe0840805ff4c897109dddcdb

SHA256
dcd36193787b1e302ec5c58fa01d96ce6501422a1819b4ca4133a6f9fa7103c4

SHA512
dab7feda7df04b1109a7b5fd168c6b61720ceb53f195245a0c24d0f2dd4fd6923a49021178d8a9a3735256351bb89e3808dc664d75d266c316b6e7d7fd259753

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

Filesize
108KB

MD5
a09bf50426f12f2f5eff149c0eaf1ca5

SHA1
33f87c48eff6cdbfe0840805ff4c897109dddcdb

SHA256
dcd36193787b1e302ec5c58fa01d96ce6501422a1819b4ca4133a6f9fa7103c4

SHA512
dab7feda7df04b1109a7b5fd168c6b61720ceb53f195245a0c24d0f2dd4fd6923a49021178d8a9a3735256351bb89e3808dc664d75d266c316b6e7d7fd259753

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

Filesize
108KB

MD5
a09bf50426f12f2f5eff149c0eaf1ca5

SHA1
33f87c48eff6cdbfe0840805ff4c897109dddcdb

SHA256
dcd36193787b1e302ec5c58fa01d96ce6501422a1819b4ca4133a6f9fa7103c4

SHA512
dab7feda7df04b1109a7b5fd168c6b61720ceb53f195245a0c24d0f2dd4fd6923a49021178d8a9a3735256351bb89e3808dc664d75d266c316b6e7d7fd259753

Download Submit
memory/2852-133-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2852-134-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2852-135-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2852-136-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2852-150-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3700-152-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3700-158-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download