e14b6d16b5abfea2340041ddb5c07f7044594a3b3b475d56fbacafbad4a684d0

General

Target

2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe
Size

39KB
MD5

34128900a64639214b067dfafa9a116c
SHA1

77e294d25e328299744e5669717b2c34f2e6e3fa
SHA256

e14b6d16b5abfea2340041ddb5c07f7044594a3b3b475d56fbacafbad4a684d0
SHA512

1413486fafe093535b2fbcd6e9fda2a22185a33bfdbc84c234cab06146c43ee1132a2b6e1dfcf3667bf52ad4022799b5b2eca5800be25d72ce5bd5040902b30a
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYfFtx:qDdFJy3QMOtEvwDpjjWMl7Tk

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1680-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/856-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/856-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1680-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/856-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/856-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1680-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/856-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/856-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

856 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe

pid process

1680 2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe

pid	process
856	asih.exe

pid	process
1680	2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1680-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/856-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/856-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe

description	pid	process	target process
PID 1680 wrote to memory of 856	1680	2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe	asih.exe
PID 1680 wrote to memory of 856	1680	2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe	asih.exe
PID 1680 wrote to memory of 856	1680	2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe	asih.exe
PID 1680 wrote to memory of 856	1680	2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_34128900a64639214b067dfafa9a116c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
254ca55b90cb8b286320d8b3225736a2

SHA1
35fdb2fce46b4999565dba8b6c76f83f7ab98b54

SHA256
e7ada9b0a0c1a4b7b3aa830d2bc53ecf65419897e99d7412bae4ad34cdbb16a3

SHA512
c4d43520392bf57bd2a49ccb9f042b16e3d1236b3b815370fe7d8baf09db81eaa12b2605dc4a931677212c12f9e8177041445e5755cd0299499726d974e9e7be

Download Submit
memory/856-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/856-19-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/856-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/856-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1680-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1680-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1680-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1680-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads