joker | 8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506

Analysis

max time kernel
152s
max time network
170s
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 23:44

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General

Target

8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe
Size

26KB
MD5

40b8cca2ae2c6066bfbef8ce0803c8c0
SHA1

7375081504060e4c044ad664b3581370f335a2d3
SHA256

8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506
SHA512

7c02081c747e9ebdbc12dad69e74fee87ec3cac685ed5f2b5ce642eca6fa51a926dbfb587d7c316d1cf8da2883f3382a3b41f331c33fd8839a33d005b18d252f
SSDEEP

384:rfNhPbj62Tj9xec1JmLfBY5vX0kdaqj0eohDTkVOhvF27z/FUxiWtBlwmRz:rbm2Tbar+f0UaqC9yoYf

Score

10^/10

joker infostealer trojan upx

Malware Config

Extracted

Family

joker

http://mmtie.oss-cn-hangzhou.aliyuncs.com

Signatures

joker
Joker is an Android malware that targets billing and SMS fraud.
infostealer trojan joker
Downloads MZ/PE file

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\KAVBase.sys	duba_1_244.exe

Executes dropped EXE 1 IoCs

pid	Process
4484	duba_1_244.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/520-132-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/files/0x0006000000022e51-134.dat	upx
behavioral2/files/0x0006000000022e51-135.dat	upx
behavioral2/memory/4484-136-0x0000000000400000-0x000000000051E000-memory.dmp	upx
behavioral2/memory/4484-137-0x0000000000400000-0x000000000051E000-memory.dmp	upx

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\duba123.ico	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\ksbwdt.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\ksscfgx.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kismain.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\whiteurl.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kcleaner.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kdefendpop.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\ksesscan.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kskinmgr.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kpassport.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kshmpg.dll	duba_1_244.exe
File created	C:\Program Files (x86)\Common Files\open.ini	8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\web\kingsoft_bbs.htm	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\recommendctrl.config	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\bredirect.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kwifitool.kid	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kpopclt.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\duba123new.ico	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\forecastmsg.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\cloudctrl.config	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\floatskin\kongqizhiliang.skin	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kavquara.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\se.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\upcfg.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kstools.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\uninstall\forbidmobile.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\clear.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\weatherconfig.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\khistory.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kqsccfg.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ksapi.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\ksbwdet2.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\duba123ienew.ico	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\kaccclear.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kxescore.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kclearpanel.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\ksde\kmctrl.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\floatskin\skinicon\defaultshrink_skin_img.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\floatskin\skinicon\wendujishrink_skin_img.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\krmcdm.krf	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kavlog2.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ksedset.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kcommonpid.kid	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\uninstall\start_acc.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kavpid.kid	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kxetray.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\operation\cas\kinfoc.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\ksreng3.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\kdock.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\push_msg_city_list.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kae\kaecore.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\floatskin\skinicon\jijian_skin_img.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\uninstall\scan_virus.png	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\install.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\broplugver.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kae\kaecore.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kdh.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\softicon.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kismain.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kslaunch.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kisfdpro64.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\netmodeconfig.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kavmenu.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kavmenu64.dll	duba_1_244.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	duba_1_244.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 520 wrote to memory of 4484	520	8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe	92
PID 520 wrote to memory of 4484	520	8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe	92
PID 520 wrote to memory of 4484	520	8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe	92

C:\Users\Admin\AppData\Local\Temp\8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe
"C:\Users\Admin\AppData\Local\Temp\8ffd741c68f8c90e56893e5e7971b410f03eadb85e556bd3b64cab5bc648f506.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:520
- C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe
  "C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:4484

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

Filesize
16.8MB

MD5
1f1c87b2b8528523907cc58c00923df8

SHA1
ea0f7ad5e2d0bc48e52ea9e00c56dc14ea026514

SHA256
37e29c28eb4a4753f6926c2f7dfd169a09e184264f537c64893637716237733a

SHA512
2a8d2107eb8d479d8378c780389278e2d20653954d93dea72700b9bb9c21bc7ecf826243c1aadf8a6bc2705cc9d0055a01cf24c32a8ba38cca87ca51abd66fbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

Filesize
16.8MB

MD5
1f1c87b2b8528523907cc58c00923df8

SHA1
ea0f7ad5e2d0bc48e52ea9e00c56dc14ea026514

SHA256
37e29c28eb4a4753f6926c2f7dfd169a09e184264f537c64893637716237733a

SHA512
2a8d2107eb8d479d8378c780389278e2d20653954d93dea72700b9bb9c21bc7ecf826243c1aadf8a6bc2705cc9d0055a01cf24c32a8ba38cca87ca51abd66fbc

Download Submit
memory/520-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4484-136-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/4484-137-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download