joker | 6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783

Analysis

max time kernel
134s
max time network
187s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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
384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
1148	DesktopLayer.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1508-55-0x0000000000400000-0x0000000000805000-memory.dmp	upx
behavioral1/files/0x00140000000054ab-56.dat	upx
behavioral1/files/0x00140000000054ab-58.dat	upx
behavioral1/files/0x00140000000054ab-60.dat	upx
behavioral1/files/0x0008000000015c60-61.dat	upx
behavioral1/memory/384-64-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x0008000000015c60-63.dat	upx
behavioral1/files/0x0008000000015c60-66.dat	upx
behavioral1/memory/1148-67-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/1508-69-0x0000000000400000-0x0000000000805000-memory.dmp	upx
behavioral1/memory/1508-71-0x0000000000400000-0x0000000000805000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px9898.tmp	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
File created	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 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371622703"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{FF9D2FA1-439C-11ED-AE30-7E4CDA66D2DC} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\TypedURLs	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1148	DesktopLayer.exe
1148	DesktopLayer.exe
1148	DesktopLayer.exe
1148	DesktopLayer.exe
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
936	iexplore.exe
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
936	iexplore.exe
936	iexplore.exe
1736	IEXPLORE.EXE
1736	IEXPLORE.EXE
1736	IEXPLORE.EXE
1736	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 384	1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	27
PID 1508 wrote to memory of 384	1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	27
PID 1508 wrote to memory of 384	1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	27
PID 1508 wrote to memory of 384	1508	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe	27
PID 384 wrote to memory of 1148	384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	28
PID 384 wrote to memory of 1148	384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	28
PID 384 wrote to memory of 1148	384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	28
PID 384 wrote to memory of 1148	384	6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe	28
PID 1148 wrote to memory of 936	1148	DesktopLayer.exe	29
PID 1148 wrote to memory of 936	1148	DesktopLayer.exe	29
PID 1148 wrote to memory of 936	1148	DesktopLayer.exe	29
PID 1148 wrote to memory of 936	1148	DesktopLayer.exe	29
PID 936 wrote to memory of 1736	936	iexplore.exe	31
PID 936 wrote to memory of 1736	936	iexplore.exe	31
PID 936 wrote to memory of 1736	936	iexplore.exe	31
PID 936 wrote to memory of 1736	936	iexplore.exe	31

C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe
"C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783.exe"
1⤵
- Loads dropped DLL
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
  C:\Users\Admin\AppData\Local\Temp\6f4d22d96bcd7fd67c7bea25afeba3bc75019438dcf6bd5e7172babecac7d783Srv.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:384
- - 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:1148
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:936
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:936 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1736

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
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\BZRU86N4.txt

Filesize
608B

MD5
a28002e6a939841af6ce73970ebc713a

SHA1
fcb7f69d98748780c574193bad67aec4d9e897fe

SHA256
02fe56b5fdbe05a72e354ee3420d13fb0ea52a99f3b7cbf7add80f8cb726319b

SHA512
574a1b356e9abf14c480b071ef741b2037312514e71745ae16710286fffd0dc5afa75adbcb1d2fcbcc958efbee86f6a40e5647df291ba6179d2de7e7803bb306

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/384-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1148-67-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1508-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1508-68-0x00000000003B0000-0x00000000003DE000-memory.dmp

Filesize
184KB

Download
memory/1508-69-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download
memory/1508-70-0x00000000003B0000-0x00000000003DE000-memory.dmp

Filesize
184KB

Download
memory/1508-71-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download
memory/1508-55-0x0000000000400000-0x0000000000805000-memory.dmp

Filesize
4.0MB

Download