6173f62047876391311f61fef2ea95e6ba552f9a2996c3de605e09625ac6da6a

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
19/08/2023, 15:54

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General

Target

4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe
Size

62KB
MD5

4a3442e506510704ce674b0c84638256
SHA1

8e07ce28c0f01b43cb75a457bec0790a62f043f6
SHA256

6173f62047876391311f61fef2ea95e6ba552f9a2996c3de605e09625ac6da6a
SHA512

00df8836884239880db53003b9b41444b488533c8462a8fac55b4fa922c134b893400a1c3a934abe22e83a509023d0f714b46668178d95712e48c2cb6b2b9b3a
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYXUXojZg:1nK6a+qdOOtEvwDpjz

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2628	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2640	4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2640-54-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0008000000012026-65.dat	upx
behavioral1/memory/2640-66-0x0000000000640000-0x0000000000650000-memory.dmp	upx
behavioral1/files/0x0008000000012026-69.dat	upx
behavioral1/memory/2640-70-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2628-71-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0008000000012026-80.dat	upx
behavioral1/memory/2628-81-0x0000000000500000-0x000000000050F311-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 4 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2628	2640	4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe	28
PID 2640 wrote to memory of 2628	2640	4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe	28
PID 2640 wrote to memory of 2628	2640	4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe	28
PID 2640 wrote to memory of 2628	2640	4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\4a3442e506510704ce674b0c84638256_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2628

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
62KB

MD5
ce680b568894bce0971c4e53599ae516

SHA1
bb774549a5362e451dd682539339a88238cfeb8e

SHA256
c6ae0366e1d600f36b7462bb499927656478ee199d9e967850d4128f998caa9e

SHA512
39e4692d051c20e5025d372179ca57d15115906241bd204a15e2121a2d180cbd52b9e59a0c86e8857bfd667ee657255fd5ea831078b20389b4cbcaf14ae3d432

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

Filesize
62KB

MD5
ce680b568894bce0971c4e53599ae516

SHA1
bb774549a5362e451dd682539339a88238cfeb8e

SHA256
c6ae0366e1d600f36b7462bb499927656478ee199d9e967850d4128f998caa9e

SHA512
39e4692d051c20e5025d372179ca57d15115906241bd204a15e2121a2d180cbd52b9e59a0c86e8857bfd667ee657255fd5ea831078b20389b4cbcaf14ae3d432

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

Filesize
62KB

MD5
ce680b568894bce0971c4e53599ae516

SHA1
bb774549a5362e451dd682539339a88238cfeb8e

SHA256
c6ae0366e1d600f36b7462bb499927656478ee199d9e967850d4128f998caa9e

SHA512
39e4692d051c20e5025d372179ca57d15115906241bd204a15e2121a2d180cbd52b9e59a0c86e8857bfd667ee657255fd5ea831078b20389b4cbcaf14ae3d432

Download Submit
memory/2628-74-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2628-71-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2628-73-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2628-81-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2640-56-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2640-66-0x0000000000640000-0x0000000000650000-memory.dmp

Filesize
64KB

Download
memory/2640-57-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2640-70-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2640-54-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2640-55-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download