dd2699a0fd719911783f9fc04c52b665773ea033eac43ea397f2a83be726dcf4

General

Target

2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe
Size

122KB
MD5

e9f0623e0be171e84d465ed51bd4a6fd
SHA1

133342d2e4c3a817406f73d32cc31d033f625e46
SHA256

dd2699a0fd719911783f9fc04c52b665773ea033eac43ea397f2a83be726dcf4
SHA512

be73f9d18a3029cd984ea30ed4ba5c5e8d7b6c2dcef0d83ee39d348037ba7ba9a53ec7064bb0279fccc1cacb232ecdd3d0e218eea948116166fadc7c8f4c7251
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgpwqWsviy6b:z6a+CdOOtEvwDpjczH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1724 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe

pid process

2060 2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe

pid	process
1724	asih.exe

pid	process
2060	2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-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:

2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe

description	pid	process	target process
PID 2060 wrote to memory of 1724	2060	2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 1724	2060	2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 1724	2060	2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 1724	2060	2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e9f0623e0be171e84d465ed51bd4a6fd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2060

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1724

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
122KB

MD5
11d60c2ce1be9290d89f7338384f1d83

SHA1
0217cfbc7b65d6a47b487b700b1bf98c607f112e

SHA256
47d557c5a005ca67f2b57a74b8eaa9e61d4ee9df5a7761a2cbff30e807d8d3a8

SHA512
da0b828e3372fbcade6259a351090980f2cc91cc0c3ad719ac5431d558436976c2416dc4fe7ef04ac6d3b56cfc500ddb78840d0cc6aea290cf15dffcb54a2a97

Download Submit
memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1724-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1724-21-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2060-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2060-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2060-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2060-15-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads