35b7a1d790ed7c6257041e1fd4ff8c8e57620a4615f706e539b437388f37683c

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
23/08/2023, 05:58

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General

Target

102da27ddfd7be4857466a0fc8dfaf70.exe
Size

3.2MB
MD5

102da27ddfd7be4857466a0fc8dfaf70
SHA1

31731d76ee1e4c5c9a9832aa867412b3424084ae
SHA256

35b7a1d790ed7c6257041e1fd4ff8c8e57620a4615f706e539b437388f37683c
SHA512

a9e17870bd2e87fd328cc028aace97f506a52840b961ca4c2d52c7ac2f3f4788be1c5ad5da728ca8e3177196338f4ea2d234e37b50d0261559ada0d26ee9767a
SSDEEP

98304:b5d+Xz6lAyJCnTu4obf/XBOHlIG2zEW5Vs+h0:FdeWCNnTuRbfMF10U+G

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/644-133-0x0000000000400000-0x000000000047B000-memory.dmp	upx
behavioral2/memory/644-137-0x0000000000400000-0x000000000047B000-memory.dmp	upx
behavioral2/memory/644-141-0x0000000000400000-0x000000000047B000-memory.dmp	upx
behavioral2/memory/644-142-0x0000000000400000-0x000000000047B000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\ssunstl.exe	102da27ddfd7be4857466a0fc8dfaf70.exe
File opened for modification	C:\Windows\Reve1.scr	102da27ddfd7be4857466a0fc8dfaf70.exe
File created	C:\Windows\Reve1.scr	102da27ddfd7be4857466a0fc8dfaf70.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\Reve1.scr"	102da27ddfd7be4857466a0fc8dfaf70.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\Desktop\ScreenSaveActive = "1"	102da27ddfd7be4857466a0fc8dfaf70.exe
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\Desktop	102da27ddfd7be4857466a0fc8dfaf70.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\Local Settings	102da27ddfd7be4857466a0fc8dfaf70.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1104	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 644 wrote to memory of 1104	644	102da27ddfd7be4857466a0fc8dfaf70.exe	87
PID 644 wrote to memory of 1104	644	102da27ddfd7be4857466a0fc8dfaf70.exe	87
PID 644 wrote to memory of 1104	644	102da27ddfd7be4857466a0fc8dfaf70.exe	87

C:\Users\Admin\AppData\Local\Temp\102da27ddfd7be4857466a0fc8dfaf70.exe
"C:\Users\Admin\AppData\Local\Temp\102da27ddfd7be4857466a0fc8dfaf70.exe"
1⤵
- Drops file in Windows directory
- Modifies Control Panel
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:644
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\readme.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1104

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\readme.txt

Filesize
67B

MD5
f42d6791f54709f9060de215e08bd09a

SHA1
8560253b7610552be045a28d813115f200d4ac10

SHA256
7485e527a86371b4306cbab58ae07b8e554f4082569594983e1bea1f4cff7f8a

SHA512
37201005fffcb8c33f625af9b939d3fff09aa99b19d3337a050f0ebd0d01f90f97cb234de7b554a020790988f6b67ae4344be836304f510cad4ac5c093c5e910

Download Submit
memory/644-133-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/644-137-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/644-141-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/644-142-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download