45549e88ede5114340b538d6f46817a86d1ff99ef968ee36129c411d80c15477

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 15:38

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General

Target

2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
Size

86KB
MD5

654946c5af63a955cbb4836fb4b01e90
SHA1

760bc71622ea30d6437dd7f0c1d4bf56bfb7b085
SHA256

45549e88ede5114340b538d6f46817a86d1ff99ef968ee36129c411d80c15477
SHA512

cead2aafaa1d90db81b76b85ad2579b65063416ecf64bcdc9d69f8ff2cb4da5c6ece0115617257831996d749442a54e67e617608ec3c617aa0e7d9a0805779cf
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIgj6J:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgi

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012255-15.dat	CryptoLocker_rule2
behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012255-15.dat	CryptoLocker_set1
behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a000000012255-15.dat	UPX
behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2596	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1668	2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012255-15.dat	upx
behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-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 1668 wrote to memory of 2596	1668	2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe	28
PID 1668 wrote to memory of 2596	1668	2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe	28
PID 1668 wrote to memory of 2596	1668	2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe	28
PID 1668 wrote to memory of 2596	1668	2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2596

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

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

Filesize
86KB

MD5
dbad51db5bbecd3349239559d933db23

SHA1
d1cc54d67e95adec68878f5d268526c3bd485757

SHA256
d82336b71e53e6838f26e6b45f8d5ef6fcfafbf05341f278409404a3c7a54829

SHA512
bb5ec08d453448ae50328b288e7ddc99537551f853498354eaf3771c92a46b34ba2df8e4a366682b53f41874d211c11c50445934d43cd39f704585536bb1467c

Download Submit
memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1668-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1668-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1668-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2596-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2596-20-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download