c9ea8373a75a85007944476fa261dee67a84ef4ffebe444d3491a8c504460229

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 21:41

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General

Target

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe
Size

48KB
MD5

65ce7331d6d53b044878cf1a8d26a61b
SHA1

8879f0052e2091df6eb70448951dfb978f4e9211
SHA256

c9ea8373a75a85007944476fa261dee67a84ef4ffebe444d3491a8c504460229
SHA512

b4d759d5ad5824cc7d8f7f72d52bc5c07cb5fc0fe12bf8e0c993cb07c11780ff607a0a6474044ddee9bec05eb50c2f28c0fc95ecdb61b96905a6c82e7edfc013
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkc9:P6Q0ElP6G+gJQMOtEvwDpjB8WMlf9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1868-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1868-13-0x0000000001DA0000-0x0000000001DAB000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1868-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1636-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1868-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1868-13-0x0000000001DA0000-0x0000000001DAB000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1868-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1636-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1636 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe

pid process

1868 2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1636	asih.exe

pid	process
1868	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe

description	pid	process	target process
PID 1868 wrote to memory of 1636	1868	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe
PID 1868 wrote to memory of 1636	1868	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe
PID 1868 wrote to memory of 1636	1868	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe
PID 1868 wrote to memory of 1636	1868	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1868

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1636

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
48KB

MD5
a8b36baa41a41fbcc830a8653a52a23f

SHA1
bb808ed6e92c90a83502aee88171c61f898bdf58

SHA256
b19d5cbb1494021809dc86601eb07d540612801cc20746bf1bdf80e387c1ad5e

SHA512
e4472d23466a797495a4c7db624b90beb9ab98728b5d9b856a9dd47b7a8ba5a6736196b166c3502b536fa77a11fc970c249e2dcb133ee376bac80472ac1af293

Download Submit
memory/1636-18-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1636-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1868-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1868-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1868-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1868-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1868-13-0x0000000001DA0000-0x0000000001DAB000-memory.dmp

Filesize
44KB

Download
memory/1868-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download