1e40bce6e476e4c0485b3f813cff5d493b1e07f52a89b56a31765529b809ea33

Resubmissions

28/08/2020, 12:47

200828-nd915gcv5n 8

28/08/2020, 12:45

200828-q7w77zyk92 8

28/08/2020, 12:39

200828-h3kmc18276 8

Analysis

max time kernel
150s
max time network
113s
platform
windows10_x64
resource
win10v200722
submitted
28/08/2020, 12:45

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General

Target

myfile.exe
Size

4.3MB
MD5

0a438448cebd370318b5294775e2405c
SHA1

60abd37bf94ee406653af60e5b72f1f69f646308
SHA256

1e40bce6e476e4c0485b3f813cff5d493b1e07f52a89b56a31765529b809ea33
SHA512

dc21a068d6aa3ce93a399d2b636a4dc17fd9b2f60c921eaadaef4eb0049c4ef5d1c09479c906660d0fa7bb7e688cdae54a36d9e73e35ac209e469a862c992976

Score

8^/10

ransomware

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3772	HexInformation.exe
816	HexDecryptor.exe
588	HexLocker.exe

Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2168186643-810464528-1121082739-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wl.jpg"	HexLocker.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Modifies Control Panel 1 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2168186643-810464528-1121082739-1000\Control Panel\Desktop	HexLocker.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = df4b338f397dd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1224	svchost.exe
Token: SeCreatePagefilePrivilege	1224	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 3472	916	myfile.exe	72
PID 916 wrote to memory of 3472	916	myfile.exe	72
PID 3472 wrote to memory of 2256	3472	cmd.exe	75
PID 3472 wrote to memory of 2256	3472	cmd.exe	75
PID 3472 wrote to memory of 2540	3472	cmd.exe	76
PID 3472 wrote to memory of 2540	3472	cmd.exe	76
PID 3472 wrote to memory of 2920	3472	cmd.exe	77
PID 3472 wrote to memory of 2920	3472	cmd.exe	77
PID 3472 wrote to memory of 2608	3472	cmd.exe	78
PID 3472 wrote to memory of 2608	3472	cmd.exe	78
PID 3472 wrote to memory of 2796	3472	cmd.exe	79
PID 3472 wrote to memory of 2796	3472	cmd.exe	79
PID 3472 wrote to memory of 3772	3472	cmd.exe	80
PID 3472 wrote to memory of 3772	3472	cmd.exe	80
PID 3472 wrote to memory of 3772	3472	cmd.exe	80
PID 3472 wrote to memory of 816	3472	cmd.exe	81
PID 3472 wrote to memory of 816	3472	cmd.exe	81
PID 3472 wrote to memory of 816	3472	cmd.exe	81
PID 3472 wrote to memory of 588	3472	cmd.exe	83
PID 3472 wrote to memory of 588	3472	cmd.exe	83
PID 3472 wrote to memory of 588	3472	cmd.exe	83
PID 816 wrote to memory of 2736	816	HexDecryptor.exe	84
PID 816 wrote to memory of 2736	816	HexDecryptor.exe	84

C:\Users\Admin\AppData\Local\Temp\myfile.exe
"C:\Users\Admin\AppData\Local\Temp\myfile.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:916
- C:\Windows\System32\cmd.exe
  "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\46B3.tmp\46B4.tmp\46C5.bat C:\Users\Admin\AppData\Local\Temp\myfile.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\Windows\system32\tree.com
    tree
    3⤵
    PID:2256
- - C:\Windows\system32\tree.com
    tree
    3⤵
    PID:2540
- - C:\Windows\system32\tree.com
    tree
    3⤵
    PID:2920
- - C:\Windows\system32\tree.com
    tree
    3⤵
    PID:2608
- - C:\Windows\system32\tree.com
    tree
    3⤵
    PID:2796
- - C:\Users\Admin\Desktop\HexInformation.exe
    HexInformation.exe
    3⤵
    - Executes dropped EXE
    PID:3772
- - C:\Users\Admin\Desktop\HexDecryptor.exe
    HexDecryptor.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:816
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\4C31.tmp\4C32.tmp\4C33.bat C:\Users\Admin\Desktop\HexDecryptor.exe"
      4⤵
      PID:2736
- - C:\Users\Admin\Desktop\HexLocker.exe
    HexLocker.exe
    3⤵
    - Executes dropped EXE
    - Sets desktop wallpaper using registry
    - Modifies Control Panel
    PID:588

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1224

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact