e980ced23abd17baf84e4fc69618215acd930805fc85019193bfe56142116a1b

General

Target

2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe
Size

117KB
MD5

8dce09cf6130ccb84e7601f2d313b54b
SHA1

d299a83a1052e087a4fe4af039aa45ea02a48a4a
SHA256

e980ced23abd17baf84e4fc69618215acd930805fc85019193bfe56142116a1b
SHA512

498899c0b9c6148e67eaaab5ebb65a03678191dad642a00b31eda196f1e0752f554df732d419369c4c0d738550a9ed012460b8a637fb4c0920002d06af1f73d5
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01y:z6a+CdOOtEvwDpjczk

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2448-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2448-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2292-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2448-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2448-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2292-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2448-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2448-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2292-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2292 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe

pid process

2448 2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe

pid	process
2292	asih.exe

pid	process
2448	2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2448-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2448-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2292-27-0x0000000000500000-0x0000000000510000-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_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe

description	pid	process	target process
PID 2448 wrote to memory of 2292	2448	2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe	asih.exe
PID 2448 wrote to memory of 2292	2448	2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe	asih.exe
PID 2448 wrote to memory of 2292	2448	2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe	asih.exe
PID 2448 wrote to memory of 2292	2448	2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_8dce09cf6130ccb84e7601f2d313b54b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2448

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2292

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
117KB

MD5
32bfdb76d1f92aa67570d0b41f47cf7e

SHA1
483f3b67918911ef4dc092e50190019653dce06d

SHA256
99c986c184791e0dc8540ecf50f576ca3a44ebcf2033c585641fcb04eed38c5e

SHA512
4d0f7cf3c75ed5cb4c32e0dbc1d0639b967a62314ff8db652488debb4c76eff1a5164ace92c688582ece0175edb4149c697fd0fb6af57c23e11e06e2168577ac

Download Submit
memory/2292-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2292-21-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2292-19-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2292-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2448-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2448-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2448-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2448-5-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2448-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2448-14-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads