cf0cd4b212855eddb85206e626f115f157afd22081d0aaeb4a5c9a1d1996595c

General

Target

2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe
Size

55KB
MD5

723fe80719864d00292991916e3860ee
SHA1

585ab2eefebfdbc66ff9e7352f98f4a1eb949382
SHA256

cf0cd4b212855eddb85206e626f115f157afd22081d0aaeb4a5c9a1d1996595c
SHA512

1352818c03fcaba8e865def955bc8a654f0d79738ce42a04acacff82a2235447df90a48ad242f4108308ad0cc46bf0a373c30a895dbccaba8921acf8dd2eeb09
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax82:z6QFElP6n+gKmddpMOtEvwDpj9aYan

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/2384-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2060-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2384-26-0x0000000000500000-0x0000000000510000-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/2384-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2060-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2384-26-0x0000000000500000-0x0000000000510000-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/2384-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2060-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2384-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2384 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe

pid process

2060 2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe

pid	process
2384	asih.exe

pid	process
2060	2024-02-12_723fe80719864d00292991916e3860ee_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/2384-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2060-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2384-26-0x0000000000500000-0x0000000000510000-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_723fe80719864d00292991916e3860ee_cryptolocker.exe

description	pid	process	target process
PID 2060 wrote to memory of 2384	2060	2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 2384	2060	2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 2384	2060	2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe	asih.exe
PID 2060 wrote to memory of 2384	2060	2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_723fe80719864d00292991916e3860ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_723fe80719864d00292991916e3860ee_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:2384

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
55KB

MD5
de1619fedb6a483e973b4276271bf7cf

SHA1
81ef0ba6d9b67cfc3bcca5314c31e763bd20f6d2

SHA256
7ae27e66b38888b7ed87f1c8c72f2615b4378af6e39d056e50a818f70980ab7a

SHA512
8fba1cc05d447732574f6152a1d25962cfec0bb25768af06ad9cd0245446a7ad57bfadada31a0b0ea2a71b6103d519d09bf1666ef78b879dbc7b7f568b600cca

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

Filesize
64KB

Download
memory/2060-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2060-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2060-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2060-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2384-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2384-18-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2384-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2384-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads