joker | 6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783

Analysis

max time kernel
135s
max time network
190s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2022 19:29

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General

Target

6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
Size

1.4MB
MD5

4235cab41c63e6aee740a64cd6e6d420
SHA1

e2f4c29518e23e67a43efe97f9b8c8d04df533d7
SHA256

6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783
SHA512

4af90ceaacf588ef9b0acf5d962a01d7c27a9cb92ce6f2c424b481e14a555dde6cd66667353601c2b22d32053cffe5088b64c598c47333c6e686a4687303c8db
SSDEEP

24576:m+jrIku0ve6aXTD3ADNdRwUG91UO8mdBVV5Ukqe2GVrfuybYd37ji4utaw+E4CX3:NjrIkPelDD3ADnRwUG9BBv2kqe2GVrfd

Score

10^/10

joker ramnit banker infostealer spyware stealer trojan upx worm

Malware Config

Extracted

Family

joker

http://iyuweiskin.oss-cn-beijing.aliyuncs.com

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
joker
Joker is an Android malware that targets billing and SMS fraud.
infostealer trojan joker

Executes dropped EXE 2 IoCs

pid	Process
1384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
1332	DesktopLayer.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0009000000022dec-133.dat	upx
behavioral2/files/0x0009000000022dec-134.dat	upx
behavioral2/files/0x0008000000022e26-137.dat	upx
behavioral2/files/0x0008000000022e26-136.dat	upx
behavioral2/memory/1384-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1332-139-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/5072-140-0x0000000000400000-0x0000000000805000-memory.dmp	upx
behavioral2/memory/5072-141-0x0000000000400000-0x0000000000805000-memory.dmp	upx
behavioral2/memory/5072-142-0x0000000000400000-0x0000000000805000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxEA36.tmp	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.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 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988201"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30988201"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3639961958"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\TypedURLs	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3639961958"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{FE31DD43-439C-11ED-89AC-DEF0885D2AEB} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3793400248"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988201"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3793400248"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371622684"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30988201"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
1332	DesktopLayer.exe
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4196	iexplore.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
4196	iexplore.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
4196	iexplore.exe
4196	iexplore.exe
3844	IEXPLORE.EXE
3844	IEXPLORE.EXE
3844	IEXPLORE.EXE
3844	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 1384	5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	80
PID 5072 wrote to memory of 1384	5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	80
PID 5072 wrote to memory of 1384	5072	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	80
PID 1384 wrote to memory of 1332	1384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	81
PID 1384 wrote to memory of 1332	1384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	81
PID 1384 wrote to memory of 1332	1384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	81
PID 1332 wrote to memory of 4196	1332	DesktopLayer.exe	82
PID 1332 wrote to memory of 4196	1332	DesktopLayer.exe	82
PID 4196 wrote to memory of 3844	4196	iexplore.exe	85
PID 4196 wrote to memory of 3844	4196	iexplore.exe	85
PID 4196 wrote to memory of 3844	4196	iexplore.exe	85

C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
"C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe"
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
  C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1384
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1332
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4196
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4196 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3844

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:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1332-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1384-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5072-140-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download
memory/5072-141-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download
memory/5072-142-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download