706f1df9c67ec3e205dfce9f9144249891820978c4a2bc61964ba2b62ccd26ff

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 11:33

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General

Target

2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe
Size

65KB
MD5

545b6e67ed7f0c27ac23b76857b68206
SHA1

d505217cdee4fe86ca8b0335f88c271f6bb61339
SHA256

706f1df9c67ec3e205dfce9f9144249891820978c4a2bc61964ba2b62ccd26ff
SHA512

e41dfe2eca80e967fe730929eb385f6c636c25b6bcf040feb1d0acf4017708f80f32422dc1aacc119675253fe1d4c333cc30d58143f29483256715e78dc712e7
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYjc3CBy:1nK6a+qdOOtEvwDpjsy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2688-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012241-11.dat	CryptoLocker_rule2
behavioral1/memory/2688-13-0x0000000002800000-0x0000000002810000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2796-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2688-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012241-11.dat	CryptoLocker_set1
behavioral1/memory/2688-13-0x0000000002800000-0x0000000002810000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2796-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2688-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000a000000012241-11.dat	UPX
behavioral1/memory/2688-13-0x0000000002800000-0x0000000002810000-memory.dmp	UPX
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2796-18-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2796	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2688	2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2688-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000a000000012241-11.dat	upx
behavioral1/memory/2688-13-0x0000000002800000-0x0000000002810000-memory.dmp	upx
behavioral1/memory/2688-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2796-18-0x0000000000500000-0x000000000050F311-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 2688 wrote to memory of 2796	2688	2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe	28
PID 2688 wrote to memory of 2796	2688	2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe	28
PID 2688 wrote to memory of 2796	2688	2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe	28
PID 2688 wrote to memory of 2796	2688	2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_545b6e67ed7f0c27ac23b76857b68206_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2796

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
65KB

MD5
9c139f0bc1cd7180bd7089194140e8b6

SHA1
0bf2bf47ef96cae075cf323c6d90fb97bc22234d

SHA256
c14db5d4b545673a645518c5670f05b07c6564d387a59e156dfada6eee4abd71

SHA512
bfb32ef26c7447ff9786b2aac8f206de108e610781f1b085c1e2e718c1d8376f9f46846ac85f07c1a6fa580a9a4fc9cd104707d6dc5fea002bde2ffce585e484

Download Submit
memory/2688-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2688-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2688-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2688-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2688-13-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2688-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2796-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2796-18-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2796-21-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download