8a9a96350f7607a0e6ecccf8381fed1ce191c726e14f225611add8616f62469f

Analysis

max time kernel
142s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 23:23

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General

Target

2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe
Size

59KB
MD5

1dc5f59ef4f4ab4365aba79cb58f493a
SHA1

c5ee37ce3692773d69b1de4f53ea146a1d2825d3
SHA256

8a9a96350f7607a0e6ecccf8381fed1ce191c726e14f225611add8616f62469f
SHA512

9ab8e06c5374647476506db7c12be2735a3eb6d01b207db85163d47628c042888324d30060c8bfabcba527e187a79d495bb2c29eb3458a360f01073d5875f723
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PTg:BbdDmjr+OtEvwDpjM+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2136-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000000e655-11.dat	CryptoLocker_rule2
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2136-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2136-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000000e655-11.dat	UPX
behavioral1/memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2084	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2136	2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe

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 2136 wrote to memory of 2084	2136	2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe	28
PID 2136 wrote to memory of 2084	2136	2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe	28
PID 2136 wrote to memory of 2084	2136	2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe	28
PID 2136 wrote to memory of 2084	2136	2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_1dc5f59ef4f4ab4365aba79cb58f493a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2084

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
59KB

MD5
fa7447c0574e6877b053866b4904b3c4

SHA1
e9209ef8b0215aa386f13beffd8eb2700b83f72d

SHA256
78257f28b2dad44f3419754a42506eb68790fff9f56ac800321f285c401eead3

SHA512
8fc0cdfcc6816cd52ab0e450146cc78d1fea2d6bdca1ca7029202bfb88c6a433fbab1186d88b57fd3ddb0bda7587d48df36135bd77cbbfbcec33b5ba3a1f6d59

Download Submit
memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2084-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2084-21-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2136-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2136-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2136-4-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2136-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2136-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2136-14-0x0000000002470000-0x0000000002480000-memory.dmp

Filesize
64KB

Download