6a9d9c3dc24ce8476ba06efc5bb042a04484e6dfe6287d22469468f6589c8d95

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 13:30

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General

Target

2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe
Size

38KB
MD5

561894c5a65d05a1da8b2699311c22a6
SHA1

d797dc482274cc9a6886c76407dbdcb2538567c1
SHA256

6a9d9c3dc24ce8476ba06efc5bb042a04484e6dfe6287d22469468f6589c8d95
SHA512

bbdecb9369f3e52d40962ada5d48cd7cc49d12db301edda898d27583e02007b31ec87df75f37c506fedcece21400f42964bd51e923b6d78859204cba46820a43
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWR0:qTJu9cvMOtEvwDpjppVXzR0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000143a8-11.dat	CryptoLocker_rule2
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c0000000143a8-11.dat	CryptoLocker_set1
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c0000000143a8-11.dat	UPX
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2644-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2644-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2644	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2344	2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c0000000143a8-11.dat	upx
behavioral1/memory/2344-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2644-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2644-27-0x0000000000500000-0x000000000050F000-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 2344 wrote to memory of 2644	2344	2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe	28
PID 2344 wrote to memory of 2644	2344	2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe	28
PID 2344 wrote to memory of 2644	2344	2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe	28
PID 2344 wrote to memory of 2644	2344	2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_561894c5a65d05a1da8b2699311c22a6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2644

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

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

Filesize
39KB

MD5
d6733bcf32fdcb2995a10c49d482d1ed

SHA1
86648d2452353dfc39fec3f43e0c495ebbb797de

SHA256
71d578569a40436d5cc0206f3abc00c3b1989509386276cde6949c7e63f637c7

SHA512
6006635aa0dae9a117f9222b7edde756d788b590423f00eebb0add49fb3b88f7c30b040d8ec3d283435f17a5229ba592ef60f697a331eaae2df4c97ecf1e60cf

Download Submit
memory/2344-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2344-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2344-2-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2344-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2344-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2644-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2644-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2644-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2644-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download