4833a4294c7ede66d9d3c4bf487bfdc31c14fc181aa805cd05519b12ff7f5fa3

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/05/2024, 05:28

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General

Target

2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe
Size

40KB
MD5

0dc35b22f22d5cf3ecb57e86c381850d
SHA1

70c6e755c95cd55aabec1fa628361ed143d7af57
SHA256

4833a4294c7ede66d9d3c4bf487bfdc31c14fc181aa805cd05519b12ff7f5fa3
SHA512

472cbdc4b310004b4b380d535ec7c9ce47fe7a821e151557664110b087c5c167247723b9c904c7bd232e507a372c4e3eb57d7e31e0f31efbf9c45ca3a644627a
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYox:qDdFJy3QMOtEvwDpjjWMl7Tlx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2272-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001232c-11.dat	CryptoLocker_rule2
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2908-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2908-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2272-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001232c-11.dat	CryptoLocker_set1
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2908-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2908-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2272-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001232c-11.dat	UPX
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2908-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2908-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2908	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2272-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001232c-11.dat	upx
behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2908-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2908-27-0x0000000000500000-0x0000000000510000-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 2272 wrote to memory of 2908	2272	2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe	28
PID 2272 wrote to memory of 2908	2272	2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe	28
PID 2272 wrote to memory of 2908	2272	2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe	28
PID 2272 wrote to memory of 2908	2272	2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_0dc35b22f22d5cf3ecb57e86c381850d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2908

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
40KB

MD5
e600b51d72bb1b55099aa90a55a75f99

SHA1
9c326a0941c00c27f95255210a51a6a329768003

SHA256
1ec1d72b106ea7dc05d4ea264257931f04dfd8ea3f23ffa39fb25453e56a0b52

SHA512
695829bb66cee82c7c28f5675af8b9cf5a7ca4fd7a3a40669ccf62d79e357b05cd4156fe41f3d72118cd8bd3b3e6c8153d0cd2a17fcfbf46c6bcaa36a9aa038e

Download Submit
memory/2272-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2272-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2272-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2272-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2908-26-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2908-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2908-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download