1f06b58cac25073db41ac65dd3216bfa0784165fd6e6281b3facfcf4b2c345ec

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
15-08-2023 17:45

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General

Target

fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe
Size

82KB
MD5

fe4c8f34f1b360e568e9ff805ffbf18f
SHA1

00397525c7bec015dea058121d638611e58a8e0a
SHA256

1f06b58cac25073db41ac65dd3216bfa0784165fd6e6281b3facfcf4b2c345ec
SHA512

77f21bb10bcb9fe0cff25759c65e35553b4ee313e74d2a9f55441229eec8e3595d0b1c0b0977aadaf2777c1d400e4d9b38421147246c8ddce1458f3ce7e6141c
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOTFBEa4Tv:T6a+rdOOtEvwDpjNm

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1380	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1980	fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1980-54-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012028-65.dat	upx
behavioral1/memory/1380-70-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1980-69-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012028-68.dat	upx
behavioral1/files/0x0008000000012028-79.dat	upx
behavioral1/memory/1380-80-0x0000000000500000-0x0000000000510000-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 1980 wrote to memory of 1380	1980	fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe	28
PID 1980 wrote to memory of 1380	1980	fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe	28
PID 1980 wrote to memory of 1380	1980	fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe	28
PID 1980 wrote to memory of 1380	1980	fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\fe4c8f34f1b360e568e9ff805ffbf18f_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1380

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
82KB

MD5
6dba792b9db1811e3f9e70e5df911f42

SHA1
18a5d5c77c91c57788089e15a761031eb9b312c5

SHA256
f21bc21ca1106c6e203c6d93b28e676f6a82005b0279738ca04940bdb9661cbb

SHA512
4db285fe90e101c1693f524551c5a3cf3fe510cda1e91aaa99a4aa5ef4327a6373a7854e69b59b2d8bb67c1107a307a4facfa11d97347d93d1c829d6c399b151

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

Filesize
82KB

MD5
6dba792b9db1811e3f9e70e5df911f42

SHA1
18a5d5c77c91c57788089e15a761031eb9b312c5

SHA256
f21bc21ca1106c6e203c6d93b28e676f6a82005b0279738ca04940bdb9661cbb

SHA512
4db285fe90e101c1693f524551c5a3cf3fe510cda1e91aaa99a4aa5ef4327a6373a7854e69b59b2d8bb67c1107a307a4facfa11d97347d93d1c829d6c399b151

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

Filesize
82KB

MD5
6dba792b9db1811e3f9e70e5df911f42

SHA1
18a5d5c77c91c57788089e15a761031eb9b312c5

SHA256
f21bc21ca1106c6e203c6d93b28e676f6a82005b0279738ca04940bdb9661cbb

SHA512
4db285fe90e101c1693f524551c5a3cf3fe510cda1e91aaa99a4aa5ef4327a6373a7854e69b59b2d8bb67c1107a307a4facfa11d97347d93d1c829d6c399b151

Download Submit
memory/1380-70-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1380-73-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1380-72-0x0000000001CD0000-0x0000000001CD6000-memory.dmp

Filesize
24KB

Download
memory/1380-80-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1980-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1980-55-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1980-56-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1980-59-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1980-69-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download