7a0b3c3e0773d81771ff4a812356dc4280ba4e12f868920ae5e64e22549b711d

Analysis

max time kernel
133s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 05:16

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General

Target

2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe
Size

90KB
MD5

473013d47b343e09f6158f882bf24c8f
SHA1

daac4c6150b19f584e4b7724d5f41bafaf0e9d72
SHA256

7a0b3c3e0773d81771ff4a812356dc4280ba4e12f868920ae5e64e22549b711d
SHA512

a95561fe514bb46a163e1e825cca25b8d871787d958dbe8a598842c968573235267e0867d60a600028e8af581dd9cea559c49230e3235f59837f6b01652fa4ec
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRMy876:zCsanOtEvwDpj6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023127-13.dat	CryptoLocker_rule2
behavioral2/memory/2572-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4464-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023127-13.dat	CryptoLocker_set1
behavioral2/memory/2572-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4464-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023127-13.dat	UPX
behavioral2/memory/2572-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4464-55-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4464	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023127-13.dat	upx
behavioral2/memory/2572-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4464-55-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 4464	2572	2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe	85
PID 2572 wrote to memory of 4464	2572	2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe	85
PID 2572 wrote to memory of 4464	2572	2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_473013d47b343e09f6158f882bf24c8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\misid.exe

Filesize
90KB

MD5
a319ff80c0b20f57f83cf392dac1e206

SHA1
40916ffc8bdb458bdd40e885c2a1ff485ed0b4c6

SHA256
afb4cc92f0a1c7ffb99b3284d9b5c0c4b4136cc2a510d3653515a741c8fe1dc8

SHA512
e71e717f7215037e29207e874e6e507d51e4dd72656af0eb0275ebb0264e487fbd61875504aa8af85e5687e582d8317363d998569cd9ad72bb360d6b936c1b4e

Download Submit
memory/2572-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2572-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2572-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2572-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/2572-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4464-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4464-21-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4464-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download