de0f1d0aac27b64b7261fa92d3d5b327c9532e9c1c07b36616a057a9309d6c30

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16/06/2024, 04:33

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General

Target

2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe
Size

97KB
MD5

f29bf9fd4d9a2f1fbafbac28f5c839b9
SHA1

0bf65581563b34f7f55c3d4b7a5a184d7cbcfbe5
SHA256

de0f1d0aac27b64b7261fa92d3d5b327c9532e9c1c07b36616a057a9309d6c30
SHA512

684cc08c4bbabfb9d875a87c80244508037d75bf5214c5ce28a3398e26adf957b28a19160335e69748f6d4672bc506423203e514de8cc984f23213036e15de52
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+7:AnBdOOtEvwDpj6zw

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000700000001211c-11.dat	CryptoLocker_rule2
behavioral1/memory/2060-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2700-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000700000001211c-11.dat	CryptoLocker_set1
behavioral1/memory/2060-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2700-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000700000001211c-11.dat	UPX
behavioral1/memory/2060-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2700-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2700	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2060	2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000700000001211c-11.dat	upx
behavioral1/memory/2060-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2700-27-0x0000000000500000-0x000000000050F000-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 2060 wrote to memory of 2700	2060	2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe	28
PID 2060 wrote to memory of 2700	2060	2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe	28
PID 2060 wrote to memory of 2700	2060	2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe	28
PID 2060 wrote to memory of 2700	2060	2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_f29bf9fd4d9a2f1fbafbac28f5c839b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2700

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
97KB

MD5
b82d78bd76a6500fcac8b0ea183241d3

SHA1
5f55eaff0c99504d60b75f74c188e6cd21e962ca

SHA256
4d9bffed4e7659518736ae3eef88513d4115ac406d33af3a708aabba9261657b

SHA512
a68019ee2be384a58f3aeeb71745376500c1b7886b4ba2de231fce43e7558c6b49fb52ccacf293d70c817ffde2b30f8734b363a3ae1cfbfdeda20c76553675ac

Download Submit
memory/2060-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2060-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2060-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2060-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2060-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-19-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2700-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2700-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download