4669a8b5b72dcf9776b5ed0003b40d95691f639f928adbae12d3acb978b5813b

Analysis

max time kernel
88s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 05:52

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General

Target

2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe
Size

83KB
MD5

884ff9b8fd15aeeb592cce1d926affff
SHA1

5bc65913a632c37e95dddf5bde9f4932773f2d30
SHA256

4669a8b5b72dcf9776b5ed0003b40d95691f639f928adbae12d3acb978b5813b
SHA512

9e7d9a095ebb16a38b734fb6f0c1b117936b46c1c0f7e057abaceaad282ecc66e1ef85ae13b5bd0d4ea02ce7c0ca250579e550fb2dd9bef631f88d6666f15266
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1YZ:zCsanOtEvwDpj6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023109-13.dat	CryptoLocker_rule2
behavioral2/memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1976-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1276-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023109-13.dat	CryptoLocker_set1
behavioral2/memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1976-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1276-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023109-13.dat	UPX
behavioral2/memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1976-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1276-55-0x0000000000500000-0x0000000000510000-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	2024-02-12_884ff9b8fd15aeeb592cce1d926affff_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
1276	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023109-13.dat	upx
behavioral2/memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1976-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1276-55-0x0000000000500000-0x0000000000510000-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 1976 wrote to memory of 1276	1976	2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe	83
PID 1976 wrote to memory of 1276	1976	2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe	83
PID 1976 wrote to memory of 1276	1976	2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_884ff9b8fd15aeeb592cce1d926affff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1976
- 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:1276

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

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Downloads

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

Filesize
83KB

MD5
e5af3b09d59647105481fa1f957361f5

SHA1
d39fe8d049691eec31ee411a98187c05ac7d1e38

SHA256
af67946237e45e22578b78fa87c1367cc08685d44ff95027705d51d4eaf8c24b

SHA512
b157acbcd7af2c5caac0aa69fc7e221fa6ce2fa0eb5fc4b2f8274cf345e44dbdae158309335e327e30aad16bc456078dd390faef49ef91547b3201282f716691

Download Submit
memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1276-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1276-20-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1276-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1976-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/1976-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download