deddb8383fc1b2f35138408351d07b090b9bd8dd3bd43e04d5c3ffd42a6d003a

Analysis

max time kernel
95s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16/09/2024, 06:01

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General

Target

Ransom.Win32.Tescrypt.exe
Size

68KB
MD5

ea181c784d007ed62403d5a6c766a610
SHA1

a0edb8ef1fd5674a36adc48c218ae951cf17d1c3
SHA256

deddb8383fc1b2f35138408351d07b090b9bd8dd3bd43e04d5c3ffd42a6d003a
SHA512

34e7c090f22544f01e416c560bdd510bfcba9e0d002567c6050dfd748000abef1bf61d6704f0cde481f0ac90a62134a3b1cd8c6041708152de2a190422c6572a
SSDEEP

1536:fgWJBwVSclkxvodVSXq7vTFtb47XPArcxvgLLqZ10CmuJdr:fgWJi1kxvqVCq7LFtE7/ArcxkOZ1Bbdr

Score

7^/10

discovery upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4732	Ransom.Win32.Tescrypt.exe

Executes dropped EXE 1 IoCs

pid	Process
4732	Ransom.Win32.Tescrypt.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5116-0-0x0000000000400000-0x000000000043A000-memory.dmp	upx
behavioral2/files/0x00090000000233eb-11.dat	upx
behavioral2/memory/4732-12-0x0000000000400000-0x000000000043A000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Ransom.Win32.Tescrypt.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5116	Ransom.Win32.Tescrypt.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
5116	Ransom.Win32.Tescrypt.exe
4732	Ransom.Win32.Tescrypt.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 4732	5116	Ransom.Win32.Tescrypt.exe	83
PID 5116 wrote to memory of 4732	5116	Ransom.Win32.Tescrypt.exe	83
PID 5116 wrote to memory of 4732	5116	Ransom.Win32.Tescrypt.exe	83

C:\Users\Admin\AppData\Local\Temp\Ransom.Win32.Tescrypt.exe
"C:\Users\Admin\AppData\Local\Temp\Ransom.Win32.Tescrypt.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:5116
- C:\Users\Admin\AppData\Local\Temp\Ransom.Win32.Tescrypt.exe
  C:\Users\Admin\AppData\Local\Temp\Ransom.Win32.Tescrypt.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:4732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Ransom.Win32.Tescrypt.exe

Filesize
68KB

MD5
09be69f0cd232b2540d3694c6e376cd6

SHA1
4a96e8f0598a69f676738cff9a2684248def9d18

SHA256
f8039256e37501d32a8c3e2edacf916d1a752769fe2e4ead834d5546876691e6

SHA512
3edca41d0dc14bbcca53cb656a6d487f96369824ba6fcdc0b1deb157254be51fa4961c1edd6d88205909bd52b5c306ccccd772b2c48fd69488e81f1abe122e73

Download Submit
memory/4732-12-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/4732-15-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4732-14-0x0000000000190000-0x000000000019E000-memory.dmp

Filesize
56KB

Download
memory/4732-20-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4732-25-0x00000000014C0000-0x00000000014DB000-memory.dmp

Filesize
108KB

Download
memory/4732-26-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/5116-0-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/5116-1-0x00000000000E0000-0x00000000000EE000-memory.dmp

Filesize
56KB

Download
memory/5116-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/5116-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download