9932ed79d7958609a1af7203f19c38744d001aefabb751fb857d3cdd8d876973

General

Target

2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe
Size

5.5MB
MD5

2c30683fca6fb9982c8ba3353c57c58d
SHA1

94b2b224b5d1042f3306e73411b3c143ef29b64b
SHA256

9932ed79d7958609a1af7203f19c38744d001aefabb751fb857d3cdd8d876973
SHA512

81051a1fdb183afa645c5b4f736fc43951d0780c0dd7e4685a8bd4ecc37d955db7871eb43abf55c57793c1e7ff13cb795c6d2cb05e2ad69c864e6a344166359a
SSDEEP

98304:ot1QKvyjzO6B3DenIMmzyxD++XsBq+JUieGNt3sB/a1Ed9m+Ufg:otTvgz73XMpxDbcwYvt3sFa4Og

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1656-0-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1656-16-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1656-6-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\lossy.exe	CryptoLocker_rule2
behavioral1/memory/1656-22-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2496-26-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1656-24-0x0000000003540000-0x0000000003DC4000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2496-32-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2496-40-0x0000000008000000-0x0000000008884000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

2496 lossy.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe

pid process

1656 2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exelossy.exe

pid process

1656 2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe
2496 lossy.exe

pid	process
2496	lossy.exe

pid	process
1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe

pid	process
1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe
2496	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe

description	pid	process	target process
PID 1656 wrote to memory of 2496	1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe	lossy.exe
PID 1656 wrote to memory of 2496	1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe	lossy.exe
PID 1656 wrote to memory of 2496	1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe	lossy.exe
PID 1656 wrote to memory of 2496	1656	2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_2c30683fca6fb9982c8ba3353c57c58d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1656

C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2496

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\lossy.exe
Filesize
5.5MB

MD5
53ad1971cb9b634dec14914ae25e4309

SHA1
70bc5529be3295fe682290f4631a0a57e64b5b53

SHA256
bce4c7920d82d4411ffdc3f7c929f43e7400038fa4222288a176c2f2afacaa57

SHA512
ce7945bc2fde6b7c2f3632897a3425987a591fbc3f9920351968b4cddfd8fb37a82a009fecc21852b84193ebce93c8c8a9320def0ed6d6e64d45eb7b4f8df4bd

Download Submit
memory/1656-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1656-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1656-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1656-7-0x000000000800A000-0x0000000008303000-memory.dmp

Filesize
3.0MB

Download
memory/1656-1-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1656-6-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/1656-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1656-0-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/1656-16-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/1656-22-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/1656-25-0x000000000800A000-0x0000000008303000-memory.dmp

Filesize
3.0MB

Download
memory/1656-24-0x0000000003540000-0x0000000003DC4000-memory.dmp

Filesize
8.5MB

Download
memory/2496-26-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/2496-32-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download
memory/2496-34-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2496-40-0x0000000008000000-0x0000000008884000-memory.dmp

Filesize
8.5MB

Download

Analysis

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