38848e4c271c75bcdea254774e94a5e0806104235fe85920c4b160c510780ce6

Resubmissions

07/02/2023, 07:49

230207-jn15laac44 7

07/02/2023, 07:28

230207-ja4nkadc5w 1

Analysis

max time kernel
36s
max time network
39s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
07/02/2023, 07:49

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General

Target

attachment-3.eml
Size

499KB
MD5

3e1760e4f1beaa5bb7ea9f8ac821ba7b
SHA1

8681d248f07d71dae54e22861afbef95cca791cb
SHA256

4e841e30fc7af251c5793a164e04e5026e1f822f554d4af78d585f142dd787d7
SHA512

6dc8835baeb06afb685f7d44f0dd8fe3cf16236ae795a0ace64ba47aee91ce8a3c918bdcf58555d0d6917ccd3f3dbf718dd9d0318ede79beb4f82f55669403d5
SSDEEP

6144:LyFP2/eReiIvwyJQusiqJ2OJVEy6fMRiVHXKvk2yKoS3CmlPT5j2Td7a42:Le1IvW2JMGXQIKosCqATx2

Score

3^/10

Malware Config

Signatures

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 15 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{791FF00C-A6C4-11ED-BF5F-42A3CC74B480} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings	cmd.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\attachment-3.eml:OECustomProperty	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5036	OpenWith.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4244	iexplore.exe

Suspicious use of SetWindowsHookEx 35 IoCs

pid	Process
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
5036	OpenWith.exe
4244	iexplore.exe
4244	iexplore.exe
2124	IEXPLORE.EXE
2124	IEXPLORE.EXE
2124	IEXPLORE.EXE
2124	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 4244	5036	OpenWith.exe	90
PID 5036 wrote to memory of 4244	5036	OpenWith.exe	90
PID 4244 wrote to memory of 2124	4244	iexplore.exe	92
PID 4244 wrote to memory of 2124	4244	iexplore.exe	92
PID 4244 wrote to memory of 2124	4244	iexplore.exe	92

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\attachment-3.eml
1⤵
- Modifies registry class
- NTFS ADS
PID:4952

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\attachment-3.eml
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4244
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4244 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:2124

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\attachment-3.eml

Filesize
499KB

MD5
3e1760e4f1beaa5bb7ea9f8ac821ba7b

SHA1
8681d248f07d71dae54e22861afbef95cca791cb

SHA256
4e841e30fc7af251c5793a164e04e5026e1f822f554d4af78d585f142dd787d7

SHA512
6dc8835baeb06afb685f7d44f0dd8fe3cf16236ae795a0ace64ba47aee91ce8a3c918bdcf58555d0d6917ccd3f3dbf718dd9d0318ede79beb4f82f55669403d5

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