c9754ac4bcdbec7b04a17066ec31f17b03664e02077399dec19f4ab262954a61

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
29-09-2023 19:52

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General

Target

2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe
Size

114KB
MD5

d47776c01cbf23f7b68a615f7a2dc281
SHA1

438fe56034ebb3b418d49b1fd100dac0afc073b1
SHA256

c9754ac4bcdbec7b04a17066ec31f17b03664e02077399dec19f4ab262954a61
SHA512

2cde68f4a3f837f770c9d1fe2d67fbfd8732cd52eda6193dcc27fbaeaa576f5a8de45bc4a5870b0fc296594935c272eca8a6e87815f961f2db6ec513d871ee6c
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgerar/7:T6a+rdOOtEvwDpjLzm

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1908	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2260	2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2260-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000f000000012002-11.dat	upx
behavioral1/files/0x000f000000012002-14.dat	upx
behavioral1/memory/2260-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1908-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000f000000012002-25.dat	upx
behavioral1/memory/1908-26-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 1908	2260	2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe	28
PID 2260 wrote to memory of 1908	2260	2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe	28
PID 2260 wrote to memory of 1908	2260	2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe	28
PID 2260 wrote to memory of 1908	2260	2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_d47776c01cbf23f7b68a615f7a2dc281_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1908

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

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

Filesize
114KB

MD5
a16451a62e49711dd6150c3b7b0aa5fe

SHA1
d28be11fecb59f2bbe0f249bc2800dd376dc52a7

SHA256
6905aabb8a95bb9c852eec350996796364c7726c3b265bf4bfc7a3b869eafa65

SHA512
589397f4deb8ee828ec3f2f78b2bb58ae1ac0d8fc222f1b9cc546526a9c6f407caa8200de5c97d3ecaa3f7769d0a2ec579c58e3742e156026f828874dbcfd5e1

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
114KB

MD5
a16451a62e49711dd6150c3b7b0aa5fe

SHA1
d28be11fecb59f2bbe0f249bc2800dd376dc52a7

SHA256
6905aabb8a95bb9c852eec350996796364c7726c3b265bf4bfc7a3b869eafa65

SHA512
589397f4deb8ee828ec3f2f78b2bb58ae1ac0d8fc222f1b9cc546526a9c6f407caa8200de5c97d3ecaa3f7769d0a2ec579c58e3742e156026f828874dbcfd5e1

Download Submit
\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
114KB

MD5
a16451a62e49711dd6150c3b7b0aa5fe

SHA1
d28be11fecb59f2bbe0f249bc2800dd376dc52a7

SHA256
6905aabb8a95bb9c852eec350996796364c7726c3b265bf4bfc7a3b869eafa65

SHA512
589397f4deb8ee828ec3f2f78b2bb58ae1ac0d8fc222f1b9cc546526a9c6f407caa8200de5c97d3ecaa3f7769d0a2ec579c58e3742e156026f828874dbcfd5e1

Download Submit
memory/1908-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1908-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1908-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1908-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2260-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2260-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2260-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2260-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2260-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download