9bd52703dba9fde3dda64118f9404ed8c3aab6cd3c6b6924f173fcbd5d83fd96

Analysis

max time kernel
7s
max time network
9s
platform
windows10_x64
resource
win10v20210408
submitted
02/07/2021, 11:53

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General

Target
4cc53c562f33ec28c3f5ca7d18e16491.exe
Size 175KB
Sample210702-jgbldh2yhn
SHA256 9bd52703dba9fde3dda64118f9404ed8c3aab6cd3c6b6924f173fcbd5d83fd96
MD5 4cc53c562f33ec28c3f5ca7d18e16491
SHA1 3ee2b73c635e4f96af059c16b3e6402ce48389bb
SHA512 e03b49d82a508696b4ee8dab436892ef74873a3139ece6bfdf093c44679dc28ea4a974c1f8292f078f532269706e982f461a4159f91afe3efd9fc86d655ab7fd
MD5 SHA1 SHA512

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
408	2749918.exe
704	4032464.exe
3996	5847084.exe
2764	6710920.exe
1968	3953843.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\software\microsoft\windows\currentversion\run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Florian Heidenreich = "C:\\Users\\Admin\\AppData\\Roaming\\Florian Heidenreich\\Mp4tags.exe"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinHost = "C:\\Users\\Admin\\AppData\\Roaming\\WinHost\\WinHoster.exe"	4032464.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	568	4cc53c562f33ec28c3f5ca7d18e16491.exe
Token: SeDebugPrivilege	2764	6710920.exe
Token: SeDebugPrivilege	408	2749918.exe
Token: SeShutdownPrivilege	500	shutdown.exe
Token: SeRemoteShutdownPrivilege	500	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3924	LogonUI.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 568 wrote to memory of 408	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	74
PID 568 wrote to memory of 408	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	74
PID 568 wrote to memory of 408	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	74
PID 568 wrote to memory of 704	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	75
PID 568 wrote to memory of 704	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	75
PID 568 wrote to memory of 704	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	75
PID 568 wrote to memory of 3996	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	77
PID 568 wrote to memory of 3996	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	77
PID 568 wrote to memory of 2764	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	78
PID 568 wrote to memory of 2764	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	78
PID 568 wrote to memory of 2764	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	78
PID 568 wrote to memory of 1968	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	79
PID 568 wrote to memory of 1968	568	4cc53c562f33ec28c3f5ca7d18e16491.exe	79
PID 1968 wrote to memory of 2096	1968	3953843.exe	80
PID 1968 wrote to memory of 2096	1968	3953843.exe	80
PID 1968 wrote to memory of 500	1968	3953843.exe	82
PID 1968 wrote to memory of 500	1968	3953843.exe	82

C:\Users\Admin\AppData\Local\Temp\4cc53c562f33ec28c3f5ca7d18e16491.exe
"C:\Users\Admin\AppData\Local\Temp\4cc53c562f33ec28c3f5ca7d18e16491.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:568
- C:\Users\Admin\AppData\Roaming\2749918.exe
  "C:\Users\Admin\AppData\Roaming\2749918.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:408
- C:\Users\Admin\AppData\Roaming\4032464.exe
  "C:\Users\Admin\AppData\Roaming\4032464.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:704
- C:\Users\Admin\AppData\Roaming\5847084.exe
  "C:\Users\Admin\AppData\Roaming\5847084.exe"
  2⤵
  - Executes dropped EXE
  PID:3996
- C:\Users\Admin\AppData\Roaming\6710920.exe
  "C:\Users\Admin\AppData\Roaming\6710920.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2764
- C:\Users\Admin\AppData\Roaming\3953843.exe
  "C:\Users\Admin\AppData\Roaming\3953843.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\System32\reg.exe
    "C:\Windows\System32\reg.exe" add "hkcu\software\microsoft\windows\currentversion\run" /v "Florian Heidenreich" /d "C:\Users\Admin\AppData\Roaming\Florian Heidenreich\Mp4tags.exe" /f
    3⤵
    - Adds Run key to start application
    PID:2096
- - C:\Windows\System32\shutdown.exe
    "C:\Windows\System32\shutdown.exe" -r -f -t 00
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:500

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3ad0855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/408-135-0x00000000008A0000-0x00000000008A1000-memory.dmp

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memory/408-156-0x0000000005170000-0x0000000005171000-memory.dmp

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memory/408-154-0x00000000078A0000-0x00000000078A1000-memory.dmp

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memory/408-151-0x0000000001140000-0x000000000116D000-memory.dmp

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memory/568-119-0x000000001B050000-0x000000001B052000-memory.dmp

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memory/568-117-0x0000000000A70000-0x0000000000A90000-memory.dmp

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memory/568-118-0x0000000000A50000-0x0000000000A51000-memory.dmp

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memory/568-114-0x0000000000320000-0x0000000000321000-memory.dmp

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memory/568-116-0x0000000000A40000-0x0000000000A41000-memory.dmp

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memory/704-153-0x00000000094B0000-0x00000000094B1000-memory.dmp

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memory/704-149-0x00000000021B0000-0x00000000021C0000-memory.dmp

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memory/704-158-0x00000000049F0000-0x00000000049F1000-memory.dmp

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memory/704-146-0x0000000002400000-0x0000000002401000-memory.dmp

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memory/704-159-0x0000000002240000-0x0000000002241000-memory.dmp

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memory/704-138-0x00000000000B0000-0x00000000000B1000-memory.dmp

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memory/2764-136-0x0000000000940000-0x0000000000941000-memory.dmp

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memory/2764-162-0x0000000004C60000-0x0000000004C61000-memory.dmp

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memory/2764-161-0x0000000004C00000-0x0000000004C41000-memory.dmp

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memory/2764-145-0x0000000002BC0000-0x0000000002BC1000-memory.dmp

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memory/2764-157-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

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memory/3996-148-0x000000001ADE0000-0x000000001AE13000-memory.dmp

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memory/3996-129-0x00000000003F0000-0x00000000003F1000-memory.dmp

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memory/3996-152-0x0000000000850000-0x0000000000851000-memory.dmp

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memory/3996-134-0x0000000000840000-0x0000000000841000-memory.dmp

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memory/3996-141-0x000000001AE40000-0x000000001AE42000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads