c25bb557dad04e3043688fc4ace89987f5df637c8291f1ea26dbc1c4bfe8ef83

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 21:45

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General

Target

1d7817f2558f6134e7b7ccc6c7227362.exe
Size

63KB
MD5

1d7817f2558f6134e7b7ccc6c7227362
SHA1

1e4dc45f8dca0432cec0d90e64844e0ecbd78ec1
SHA256

c25bb557dad04e3043688fc4ace89987f5df637c8291f1ea26dbc1c4bfe8ef83
SHA512

43155077593140da84c21f38eee9046cac90411a5fcd2c2b05c2bde109398e1f23ae506947145cc8a159b225e9bf079b78132fce52b6699cf5473dafb82de546
SSDEEP

1536:P013MhtGriLBtOypP7AK0E/7U+xuRyE7E4KVOnWIUdg:6riCypP7vPT1u4EoPw1

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
4912	1d7817f2558f6134e7b7ccc6c7227362.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSSMSGS = "rundll32.exe winntn32.rom,lfJxmtAot"	1d7817f2558f6134e7b7ccc6c7227362.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\winntn32.rom	1d7817f2558f6134e7b7ccc6c7227362.exe
File opened for modification	C:\Windows\SysWOW64\winntn32.rom	1d7817f2558f6134e7b7ccc6c7227362.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
948	4912	WerFault.exe	85

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{97621E81-A874-11EE-BCD9-FEBFAF1864CB} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079553"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410857898"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1808196767"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1808196767"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1835071433"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31079553"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31079553"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2372	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2372	iexplore.exe
2372	iexplore.exe
4052	IEXPLORE.EXE
4052	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4620	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	91
PID 4912 wrote to memory of 4620	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	91
PID 4912 wrote to memory of 4620	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	91
PID 4620 wrote to memory of 2372	4620	cmd.exe	93
PID 4620 wrote to memory of 2372	4620	cmd.exe	93
PID 2372 wrote to memory of 4052	2372	iexplore.exe	95
PID 2372 wrote to memory of 4052	2372	iexplore.exe	95
PID 2372 wrote to memory of 4052	2372	iexplore.exe	95
PID 4912 wrote to memory of 2372	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	93
PID 4912 wrote to memory of 2372	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	93
PID 4912 wrote to memory of 3528	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	36
PID 4912 wrote to memory of 3528	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	36
PID 4912 wrote to memory of 5000	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	97
PID 4912 wrote to memory of 5000	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	97
PID 4912 wrote to memory of 5000	4912	1d7817f2558f6134e7b7ccc6c7227362.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3528
- C:\Users\Admin\AppData\Local\Temp\1d7817f2558f6134e7b7ccc6c7227362.exe
  "C:\Users\Admin\AppData\Local\Temp\1d7817f2558f6134e7b7ccc6c7227362.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c start iexplore -embedding
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4620
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -embedding
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2372
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2372 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4052
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\fig6E4A.bat"
    3⤵
    PID:5000
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4912 -s 528
    3⤵
    - Program crash
    PID:948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4912 -ip 4912
1⤵
PID:4180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\Microsoft\Windows\INetCache\IE\CCM17AA0\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\fig6E4A.bat

Filesize
188B

MD5
751eccc81fc257ca1cffb24512cdb0f0

SHA1
8f35c6c8bab2717be8cfe0a51c3ccab83d0f2fd4

SHA256
cb094a723eab6e957cfb2bc967ea38bb54cdd286872d89545ec83d221acfc2a8

SHA512
b40a62d29e4ef16f24d4052cdc1946f2ba43f08ab0d249c31f491e0b5d6d209e796c63654d329bd6f317c94b16ea43b8764d01dd4bd3d598060e61882070372c

Download Submit
C:\Users\Admin\AppData\Local\Temp\fig6E4A.tmp

Filesize
38KB

MD5
53f0b8cb1676de3edb4d89a12230c7c1

SHA1
7efe43757fa8652a70728375eb4e3994cd173de0

SHA256
f52954e1cdefea97346eeb634fa3827fa837190e041d572cf13d71146a372fc6

SHA512
e233e7a5aa0790703eedf80be831c9dd60ba468d9b1918fd46f9a99a9473b4c555abaeea292db25e028c2d5bbc6cb6c8991a5fb7959ef945708a7ddf36052c6d

Download Submit
memory/3528-8-0x000000007FFF0000-0x000000007FFF6000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads