b0d7cbcfd95d2aef7f6dede68065b2b5fa993f316949e9d793a399cdeb004150

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 04:43

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General

Target

2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe
Size

68KB
MD5

80f3874c2ca85919c7ca47f1e476cd07
SHA1

e91bd0cf75a8b3a79de520f0de9513e45bddc109
SHA256

b0d7cbcfd95d2aef7f6dede68065b2b5fa993f316949e9d793a399cdeb004150
SHA512

007725f852a9886e1aaa6d794763795859499fc0bc924e94d0a9d4c9ead1a139b08f82995aa88cd69b51bff1b0041b536b240d6cd6d33644f27f6628d44924d9
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQATr:78SEOtEvwDpjWYvQd2Pn

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001340c-11.dat	CryptoLocker_rule2
behavioral1/memory/2036-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001340c-11.dat	CryptoLocker_set1
behavioral1/memory/2036-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2520-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2036-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001340c-11.dat	UPX
behavioral1/memory/2036-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2520-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2520	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2036	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2036-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001340c-11.dat	upx
behavioral1/memory/2036-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2520-26-0x0000000000500000-0x000000000050F000-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 2036 wrote to memory of 2520	2036	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	28
PID 2036 wrote to memory of 2520	2036	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	28
PID 2036 wrote to memory of 2520	2036	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	28
PID 2036 wrote to memory of 2520	2036	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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
68KB

MD5
c75710ca0d653fa55caeff02754f64d0

SHA1
0dc5b5a4409d52112182ecc0fe0f951e17777c23

SHA256
dea96b42b5b65221e310e5a8103ed5557479802f45098030118b9624a978dee7

SHA512
e77d63c48ab312048098fe026c1f3aa464146845f2f8b4cc6bf6d1f92be5c685a9392da88cbd0883a624b751d22992070b1dacf9b64bc7ad162a34b6cdc9afb0

Download Submit
memory/2036-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2036-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2036-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2036-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2036-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2520-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2520-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2520-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download