64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389

Analysis

max time kernel
122s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
21/10/2022, 02:49

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General

Target

64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Size

30KB
MD5

72fc2816c0706df8b4cf6d6527705400
SHA1

94bc7e140d064d679ddbeafc9fc1b07243fa2731
SHA256

64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389
SHA512

74704dc890cca37dcbf60057a4370c3590131f36117cab92c51ad95e8dec193f6f9bb102584be63b1506c8e5328eb1075f930dd845d2c8a9a88f9b324fadb9d6
SSDEEP

768:bLt9cVrFuxrzrldoAk26gGue3wU+H8ZCD:bJcRyrldpx3Gu2SH8ZCD

Score

7^/10

persistence

Malware Config

Signatures

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe

Modifies WinLogon 2 TTPs 7 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32\Asynchronous = "1"	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32\DllName = "winjcr32.dll"	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32\Impersonate = "0"	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32\Startup = "EvtStartup"	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\winjcr32\Shutdown = "EvtShutdown"	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winjcr32.dll	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
File opened for modification	C:\Windows\SysWOW64\winjcr32.dll	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30991665"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3346247670"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3346247670"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3488123396"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3488123396"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991665"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373110439"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30991665"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991665"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F278B757-5124-11ED-A0EE-E6AF42CF752C} = "0"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
204	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
204	iexplore.exe
204	iexplore.exe
3092	IEXPLORE.EXE
3092	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 4548	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	83
PID 2428 wrote to memory of 4548	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	83
PID 2428 wrote to memory of 4548	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	83
PID 4548 wrote to memory of 204	4548	cmd.exe	85
PID 4548 wrote to memory of 204	4548	cmd.exe	85
PID 204 wrote to memory of 3092	204	iexplore.exe	87
PID 204 wrote to memory of 3092	204	iexplore.exe	87
PID 204 wrote to memory of 3092	204	iexplore.exe	87
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 204	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	85
PID 2428 wrote to memory of 1320	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	88
PID 2428 wrote to memory of 1320	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	88
PID 2428 wrote to memory of 1320	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	88
PID 2428 wrote to memory of 1584	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	90
PID 2428 wrote to memory of 1584	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	90
PID 2428 wrote to memory of 1584	2428	64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe	90

C:\Users\Admin\AppData\Local\Temp\64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe
"C:\Users\Admin\AppData\Local\Temp\64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.exe"
1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SysWOW64\cmd.exe
  cmd /c start iexplore -embedding
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4548
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -embedding
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:204
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:204 CREDAT:17410 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:3092
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\gosB124.bat"
  2⤵
  PID:1320
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.bat"
  2⤵
  PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\64735a1cf92f339d71e9753cd89960377a6703eede35d5e5a146435b640ae389.bat

Filesize
361B

MD5
e20478d2f9706857c8ac68db7e1a4c0a

SHA1
ebed4cd0b53eaa1e83a49ed134f3fcbe9b18218b

SHA256
67100b03f75bf2d47502543130490c4637fa19539d850978e446ae754c3de4b9

SHA512
f8d7bb416098d743d1662fa6a7ce4bc3f6c4d556b10a37ea79661bd98794208ad1d7018d49691e7cdd7daa2d1ccafd42b5f52efa5ffa03182411784c9825028b

Download Submit
C:\Users\Admin\AppData\Local\Temp\gosB124.bat

Filesize
190B

MD5
d5aa909febed58df9567011579e4977d

SHA1
f1866a380521131044f26c16404033d6252fde5b

SHA256
d4bfc234688e0880b2621b3eac81597e8616d7ca7832b35f3cb5f6bb5ce6f176

SHA512
da80c4d19db5f1750f58c4c35dfc490cc258e3498fa84dc51a4d233b15043911009576b0734337f495c899e92c85faec1ec43fb366ca75a749ba1b1072a895c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\gosB124.tmp

Filesize
21KB

MD5
3ce3efca63544003a973d95a16470d8c

SHA1
2a2b1df082f0aabe3f6323a79f480be85866c2a6

SHA256
40d20cad46c93366ea0308b90ad225f5ba5120c809bac8a7890be46a8c5ce91f

SHA512
2aca4be55db254cbd12dd321e24510be83dd6931d0844e544b410a21f303ce4dcaeece85f7a9ebdfbc1ddb8c6109877345912986bab71f22a2f9a03c832138f2

Download Submit
C:\Users\Admin\AppData\Local\Temp\gosB124.tmp

Filesize
21KB

MD5
3ce3efca63544003a973d95a16470d8c

SHA1
2a2b1df082f0aabe3f6323a79f480be85866c2a6

SHA256
40d20cad46c93366ea0308b90ad225f5ba5120c809bac8a7890be46a8c5ce91f

SHA512
2aca4be55db254cbd12dd321e24510be83dd6931d0844e544b410a21f303ce4dcaeece85f7a9ebdfbc1ddb8c6109877345912986bab71f22a2f9a03c832138f2

Download Submit
memory/2428-141-0x0000000000030000-0x0000000000035000-memory.dmp

Filesize
20KB

Download
memory/2428-137-0x0000000002030000-0x0000000002035000-memory.dmp

Filesize
20KB

Download
memory/2428-140-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2428-132-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2428-136-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2428-133-0x0000000000030000-0x0000000000035000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads