joker | 1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e

Analysis

max time kernel
157s
max time network
246s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
08-11-2022 18:21

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General

Target

1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe
Size

26KB
MD5

00f2c96ac54135d64b1fe38deb21c6d0
SHA1

6113c855657bf685fe54ef198f62c6cf77bfa085
SHA256

1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e
SHA512

6f5e7d53faa9574952274aebc74c5deb9c14256b0a449504212d94b2574db015bcd4811034d341cef06b643f7b921bb768e7ab7155e92af5a41339683f70a979
SSDEEP

384:r65Iu0DOSiBuMAjo/BNxf+yOhmwnh2Ij0eohDTkVOhvF27z/FUxiWtBlwmRz:r65JAyg9oNVo2IC9yoYf

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
1200	duba_1_244.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1964-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1964-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/files/0x0007000000012741-60.dat	upx
behavioral1/files/0x0007000000012741-62.dat	upx
behavioral1/files/0x0007000000012741-66.dat	upx
behavioral1/files/0x0007000000012741-65.dat	upx
behavioral1/files/0x0007000000012741-64.dat	upx
behavioral1/memory/1200-68-0x0000000000400000-0x000000000051E000-memory.dmp	upx

Loads dropped DLL 3 IoCs

pid	Process
1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe
1200	duba_1_244.exe
1200	duba_1_244.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
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\kavmenu64.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kfloatwin.dll	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\security\kxescan\ksfilter.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kwsu.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\floatskin\wenduji.skin	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kislive.exe	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\kxetray.exe	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\security\ksde\deheurcfg.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\bro.cfg	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\uninstall\computer_doctor.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\data\speedtest.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\ksscfgx.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\web\kingsoft_weibo.htm	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\inject.dat	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\operation\cas\kfmt.datx	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kscan.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\citys.xml	duba_1_244.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\data\floatskin\config.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ressrc\chs\kcommon.ini	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\productinfo.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kxescore_sp.xcf	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kdrvmgr.exe	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\cleanlist.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kae\karchive.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kpretend.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\ressrc\chs\uplive.svr	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\ksetupwiz.exe	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\microsoft.vc80.crt.manifest	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\ksoft.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kae\kaearcha.dat	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\liectrl.config	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\jsonv6.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\scom.xml	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\fnsign.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kxeksgpid.kid	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\security\kxescan\khistory.dll	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\data\floatskin\skinicon\defaultshrink_skin_img.png	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\microsoft.vc80.mfc.manifest	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\kdh.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kfcdetect.dll	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\kshmpg.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\operation\cas\kctrl.dat	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\data\kpld.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\duba123ienew.ico	duba_1_244.exe
File created	\??\c:\program files (x86)\kingsoft\kingsoft antivirus\security\kxescan\kae\kaecore.ini	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	1200	duba_1_244.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30
PID 1964 wrote to memory of 1200	1964	1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe	30

C:\Users\Admin\AppData\Local\Temp\1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe
"C:\Users\Admin\AppData\Local\Temp\1752a41c3f8dd77b23548c496cc28457d6a61fe1903d2373a00e25d38127e15e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964
- 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
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\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
\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
\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
\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/1200-70-0x0000000000520000-0x000000000063E000-memory.dmp

Filesize
1.1MB

Download
memory/1200-69-0x0000000000520000-0x000000000063E000-memory.dmp

Filesize
1.1MB

Download
memory/1200-68-0x0000000000400000-0x000000000051E000-memory.dmp

Filesize
1.1MB

Download
memory/1964-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1964-59-0x0000000000020000-0x0000000000034000-memory.dmp

Filesize
80KB

Download
memory/1964-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1964-67-0x0000000003C40000-0x0000000003D5E000-memory.dmp

Filesize
1.1MB

Download
memory/1964-56-0x0000000000020000-0x0000000000034000-memory.dmp

Filesize
80KB

Download
memory/1964-57-0x0000000000020000-0x0000000000034000-memory.dmp

Filesize
80KB

Download
memory/1964-55-0x0000000075281000-0x0000000075283000-memory.dmp

Filesize
8KB

Download