2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78

Analysis

max time kernel
134s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2022 23:53

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General

Target

2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe
Size

57KB
MD5

8f3abbb6c30b9e2e4e72b0e8f192aaa6
SHA1

19cc26ff5509c85520732828ec2085d52e18f33a
SHA256

2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78
SHA512

e7f52358416f3c8567c1361546ae274c9c5685290f05e058135ee03b4125fef8729de5ce05daa5a34345042477fba3ca86f6cb856415634bb8161965c17e7938
SSDEEP

1536:mkazcVn2gSpl9vxWgfb0ZqU1T4dEIi4Jnf/qrqe71G:c82gI9vcGEJ4dEIzJf/iqyG

Score

8^/10

discovery exploit upx

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

cmd.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts cmd.exe
Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

4924 takeown.exe
1252 icacls.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	cmd.exe

pid	process
4924	takeown.exe
1252	icacls.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2112-132-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2112-138-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe

Modifies file permissions 1 TTPs 2 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

4924 takeown.exe
1252 icacls.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
4924	takeown.exe
1252	icacls.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.execmd.exe

description	pid	process	target process
PID 2112 wrote to memory of 3044	2112	2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe	cmd.exe
PID 2112 wrote to memory of 3044	2112	2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe	cmd.exe
PID 2112 wrote to memory of 3044	2112	2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe	cmd.exe
PID 3044 wrote to memory of 4924	3044	cmd.exe	takeown.exe
PID 3044 wrote to memory of 4924	3044	cmd.exe	takeown.exe
PID 3044 wrote to memory of 4924	3044	cmd.exe	takeown.exe
PID 3044 wrote to memory of 1252	3044	cmd.exe	icacls.exe
PID 3044 wrote to memory of 1252	3044	cmd.exe	icacls.exe
PID 3044 wrote to memory of 1252	3044	cmd.exe	icacls.exe
PID 3044 wrote to memory of 3416	3044	cmd.exe	attrib.exe
PID 3044 wrote to memory of 3416	3044	cmd.exe	attrib.exe
PID 3044 wrote to memory of 3416	3044	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3416 attrib.exe

pid	process
3416	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe
"C:\Users\Admin\AppData\Local\Temp\2c59bd81eb6cb54781d9dc09a54a86e66d1a82781cf5f19b0510433cdb9a6a78.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\test.bat" "
2⤵
- Drops file in Drivers directory
- Suspicious use of WriteProcessMemory
PID:3044

C:\Windows\SysWOW64\takeown.exe
takeown /f "C:\Windows\system32\drivers\etc\hosts"
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:4924

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Windows\system32\drivers\etc\hosts" /grant administrators:F
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1252

C:\Windows\SysWOW64\attrib.exe
attrib -s -h -r C:\Windows\system32\drivers\etc\hosts
3⤵
- Views/modifies file attributes
PID:3416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

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\7ZipSfx.000\test.bat

Filesize
1KB

MD5
e42d4acc898ba6eafca28660001d2aed

SHA1
40be1464a04153eca0d7fef0967e475b6d9062af

SHA256
80dc20a3b0fe1c390e5a54cecb019a311de5ef9a5436c8a4c7eb5797f40e6da1

SHA512
92b6c7d67c053d3b0380b1feda04f2401975f9761651634a24baa73591780b89466d12e79e11f9c20eb93b80e962bbb7cf8277b1f503a34f110753a1a50a70e8

Download Submit
memory/1252-136-0x0000000000000000-mapping.dmp

Download
memory/2112-132-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2112-138-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3044-133-0x0000000000000000-mapping.dmp

Download
memory/3416-137-0x0000000000000000-mapping.dmp

Download
memory/4924-135-0x0000000000000000-mapping.dmp

Download