f79a8177347dc8b664ee6f5f84268a95dfa4148101f1dfbb447caeb5a6183245

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
28/05/2024, 19:54

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General

Target

2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe
Size

60KB
MD5

3e28391175b0287421323e73c378820d
SHA1

4d267da3bed5d1064beea1a464440e7d450f2371
SHA256

f79a8177347dc8b664ee6f5f84268a95dfa4148101f1dfbb447caeb5a6183245
SHA512

c1b7c14c25f6f9aeafffbb44d00150b8606a1a9cf293837f230d2bb91f74cfbb2863d3ac8925666e98dd40f7d88b09450bb92ec4fd87cdf225dbe95339ee9f29
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axK38ns:z6QFElP6n+gKmddpMOtEvwDpj9aYaQ8s

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000012122-11.dat	CryptoLocker_rule2
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1808-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e000000012122-11.dat	CryptoLocker_set1
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1808-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e000000012122-11.dat	UPX
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1808-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1808	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000e000000012122-11.dat	upx
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1808-25-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 1808	2236	2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe	28
PID 2236 wrote to memory of 1808	2236	2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe	28
PID 2236 wrote to memory of 1808	2236	2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe	28
PID 2236 wrote to memory of 1808	2236	2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1808

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
60KB

MD5
c3a72397fb9324a39a6a3108704446fd

SHA1
0214cda766be314fb57d372556a0fe03578b5a4f

SHA256
61b8e4b413d7168e871de983b90b410602eb4f2570355d44b3f1a4314e1841c4

SHA512
611627f2a1b141d685a93819195fac39ec5a8e7bf73e45eba7d6b5c97046fe98b64269d9eb59ff6a954122430a43dfeca3dc93c5c918b2bd9fadb7f6996a7989

Download Submit
memory/1808-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1808-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1808-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2236-1-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2236-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download