f4dcd6c952a3752a93303f7769f62b1552155d1d5138eef1bf4e59f645e323e7

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 04:25

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General

Target

2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe
Size

40KB
MD5

d0da8ddb6af3d8914ec47abb3d9e518b
SHA1

c9a90b5e901d8007ef5338a04775edfbecbb4acd
SHA256

f4dcd6c952a3752a93303f7769f62b1552155d1d5138eef1bf4e59f645e323e7
SHA512

06870deb85a740eec7df100c9ffd010971766e917a75a2796979088fd57e39eb30dd40e18d601e55d8f30924960906aefe7dd285836c6b01aaf82932a4f392a5
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYajR:qDdFJy3QMOtEvwDpjjWMl7TdF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e0000000126b8-11.dat	CryptoLocker_rule2
behavioral1/memory/2040-13-0x00000000005D0000-0x00000000005E0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2360-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e0000000126b8-11.dat	CryptoLocker_set1
behavioral1/memory/2040-13-0x00000000005D0000-0x00000000005E0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2040-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2360-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e0000000126b8-11.dat	UPX
behavioral1/memory/2040-13-0x00000000005D0000-0x00000000005E0000-memory.dmp	UPX
behavioral1/memory/2040-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2360-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2360	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000e0000000126b8-11.dat	upx
behavioral1/memory/2040-13-0x00000000005D0000-0x00000000005E0000-memory.dmp	upx
behavioral1/memory/2040-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2360-26-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 2040 wrote to memory of 2360	2040	2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe	28
PID 2040 wrote to memory of 2360	2040	2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe	28
PID 2040 wrote to memory of 2360	2040	2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe	28
PID 2040 wrote to memory of 2360	2040	2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_d0da8ddb6af3d8914ec47abb3d9e518b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
34d03ce8cc683b5de90472f399f55890

SHA1
053964a1758b40e776957436883cb084b21e4dc3

SHA256
0e1dee411eb64937798e4fdde1b9d55624167caee1efb4987dd93ffaea258ec7

SHA512
c5f7a5bedf7817f72b9c30fe8e1df4089e78bdc4bb406935d4f51b2ebb25b8eb4b3161e9a6022ac45aef9b008387c6255770bc5b4549cc86aec8ef04a47cf88f

Download Submit
memory/2040-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2040-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2040-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2040-13-0x00000000005D0000-0x00000000005E0000-memory.dmp

Filesize
64KB

Download
memory/2040-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2360-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download