b91da808ebd98a755e4190df3202147aa296b869af8811f5ba8108f4c62b712c

Analysis

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

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 04:24

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General

Target

2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe
Size

71KB
MD5

1f1dbefd04a332caacb5153a2d12b170
SHA1

2d32750e84b7c83fe76704214cc6d31274ed70bb
SHA256

b91da808ebd98a755e4190df3202147aa296b869af8811f5ba8108f4c62b712c
SHA512

09b53b34b79b320a123aab0292e6f5d0a317d2c695fcc26e7d045deb2ed2f29551059aada25f6c26f8b91438804277f28d76d6e0f8c5d865ca5edca7819ba1a0
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOK:DW60sllyWOtEvwDpjwF85R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1792-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e0000000126b8-11.dat	CryptoLocker_rule2
behavioral1/memory/1792-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1792-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e0000000126b8-11.dat	CryptoLocker_set1
behavioral1/memory/1792-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2872	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1792	2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe

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 1792 wrote to memory of 2872	1792	2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe	28
PID 1792 wrote to memory of 2872	1792	2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe	28
PID 1792 wrote to memory of 2872	1792	2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe	28
PID 1792 wrote to memory of 2872	1792	2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_1f1dbefd04a332caacb5153a2d12b170_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2872

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
71KB

MD5
33c40cde0ee6a54a71e81f5beb3bae71

SHA1
66e02266a5c914c24080f914ff5d143a0179a4d7

SHA256
e5bb1fbae45b0ac9382677ae9ca367053b29ee770a63c4321c1039be2f2fab21

SHA512
57d28af4bb96f2e2d80266836e16986bfbc26a4edf25c989a2df1faa683c8e8c6afde5f2f106a455dce79ba2a596c6c959fef3491c0821b06eae56c28180378f

Download Submit
memory/1792-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1792-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1792-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1792-3-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1792-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2872-25-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2872-18-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download