f311be9548a3fa465967621443b8e38aad9033e8b814981ff2db71f679cfe42f

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 17:32

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General

Target

2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe
Size

100KB
MD5

6dfa81f156e36e2ab05a4408f5c5e311
SHA1

4f3f145cbb42669e5925e51467437dc66e869082
SHA256

f311be9548a3fa465967621443b8e38aad9033e8b814981ff2db71f679cfe42f
SHA512

ef5cd06f2c34947970c26f4ebd6dcd7040b83fc789c869edccb988304ce1b099f8a8bd3a425306377ced35805c9f8b2248e2e1cd082d2d51e29385b1be03a080
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2OYPr:xj+VGMOtEvwDpjubwQEIiVmkxv/CYPr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000155ed-11.dat	CryptoLocker_rule2
behavioral1/memory/2240-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2240-14-0x0000000001E60000-0x0000000001E70000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2388-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000155ed-11.dat	CryptoLocker_set1
behavioral1/memory/2240-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2388-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x00090000000155ed-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2240-15-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2388-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2388	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe

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 2240 wrote to memory of 2388	2240	2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe	28
PID 2240 wrote to memory of 2388	2240	2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe	28
PID 2240 wrote to memory of 2388	2240	2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe	28
PID 2240 wrote to memory of 2388	2240	2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_6dfa81f156e36e2ab05a4408f5c5e311_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2388

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

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Downloads

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

Filesize
101KB

MD5
e739b0a79a0d5309d858d5314d480771

SHA1
e04428830645b982b4292372866b324242ac8b8c

SHA256
c888b14590bc18dc9e1a9a9b183c023df7cd22f88ff51959c0410db182b22b10

SHA512
e7dfbf81688291e61e2561083780c5997fefe10bce1dd208ecaa2e593781bbee8f1aaae8d47e71458da808f00290d545bc6fff5e0b9fccf0f2f1d1fbdea29802

Download Submit
memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2240-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2240-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2240-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2240-14-0x0000000001E60000-0x0000000001E70000-memory.dmp

Filesize
64KB

Download
memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2388-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2388-21-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2388-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download