0d95dc041aef18dbac49686c238bdef6cc9b34a6618211364e8a5bf7a703a28d

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 13:34

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General

Target

2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe
Size

80KB
MD5

5eebdafef5f5e0c33bbec006e0900b42
SHA1

797f6ad71c20176d65ca68b5fca519c20c68af28
SHA256

0d95dc041aef18dbac49686c238bdef6cc9b34a6618211364e8a5bf7a703a28d
SHA512

8b0837eb3a6022bca9dc5e03020f8d4aa7cac988799e4c934e73b9828ab9e2287c66d84154174f706fa66259f55a93de8a968a57d963c5866e643c34c7f3062d
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1e:zCsanOtEvwDpjo

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/948-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023214-13.dat	CryptoLocker_rule2
behavioral2/memory/948-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3924-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/948-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023214-13.dat	CryptoLocker_set1
behavioral2/memory/948-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3924-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/948-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0009000000023214-13.dat	UPX
behavioral2/memory/948-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3924-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3924	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/948-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023214-13.dat	upx
behavioral2/memory/948-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3924-26-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 948 wrote to memory of 3924	948	2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe	86
PID 948 wrote to memory of 3924	948	2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe	86
PID 948 wrote to memory of 3924	948	2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_5eebdafef5f5e0c33bbec006e0900b42_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:948
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3924

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
80KB

MD5
8f7bb1eae8d0177d30ac88174d5372bb

SHA1
a18bd5c7f47bb961cc8cfb7ddce1086acee59801

SHA256
51c62b84ef66f750b48bd3cf170f6cf677ba2998ff6cb8e7af5e0745f08e4bb0

SHA512
5e21d48a593ef38c9340bcf41ebad2fe12ed9de3caa1f80ed62cb0e4e3317b562cee7afac022ff55ea04e40a031345b7780106d247cf2fe311bfe0f6b078ca44

Download Submit
memory/948-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/948-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/948-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/948-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/948-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3924-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3924-21-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/3924-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download