11ca173a74a19ac2f34471358aac2c79959d16a42ae924205ba6ed7f1186e1f5

General

Target

2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe
Size

10.9MB
MD5

3af0401cc8a4bca80045796f5d858c39
SHA1

1c12c063cae8dc930190dfc4c744f6a3d098ad6c
SHA256

11ca173a74a19ac2f34471358aac2c79959d16a42ae924205ba6ed7f1186e1f5
SHA512

cc3f7bcc2030a03577035339b6d4c98208bfcb69c685e358d618cb7402722bc08238faec7a8073eb8a9ac204753b64501189466013c7e33efa6a9efd445a06bf
SSDEEP

196608:VLbYQVG2JOguavkNqkTf9ABa/MXvd4wdbOj93pL2hDcsqjZ72Oz+Arm5g1xFPld0:9bYlQRb8HW4w4lgosWZ6OEyVW

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
5072	join.me.exe
368	LMIGuardianSvc.exe

Loads dropped DLL 1 IoCs

pid	Process
368	LMIGuardianSvc.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	join.me.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	join.me.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LMIGuardianSvc.exe

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	join.me.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	join.me.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	join.me.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\	join.me.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	join.me.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5072	join.me.exe
5072	join.me.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5072	join.me.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeCreateGlobalPrivilege	5072	join.me.exe
Token: SeCreateGlobalPrivilege	5072	join.me.exe
Token: SeCreateGlobalPrivilege	368	LMIGuardianSvc.exe
Token: SeCreateGlobalPrivilege	368	LMIGuardianSvc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5072	join.me.exe
5072	join.me.exe
5072	join.me.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 5072	804	2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe	86
PID 804 wrote to memory of 5072	804	2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe	86
PID 804 wrote to memory of 5072	804	2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe	86
PID 5072 wrote to memory of 368	5072	join.me.exe	87
PID 5072 wrote to memory of 368	5072	join.me.exe	87
PID 5072 wrote to memory of 368	5072	join.me.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_3af0401cc8a4bca80045796f5d858c39_bkransomware_karagany.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:804
- C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\join.me.exe
  "C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\join.me.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5072
- - C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\LMIGuardianSvc.exe
    C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\LMIGuardianSvc /escort 5072 /CUSTOM JoinMe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\LMIGuardianDll.dll

Filesize
1.5MB

MD5
3d5b26f5076fbe6e5bfc12170ff9c205

SHA1
2f3402e0413b5d064d9f849dd912f73f6199880c

SHA256
442b9dc4c1ad721da400c7b0539da0d278f41a93740b6913e34b400bec9d1ff7

SHA512
89587a9d40a1f769b6da12dd32fee5bd09c5c93a8a95f0dcca336eb1ab1fe9e94a5895ca6afd359429fa6edf056bd5f971bd9d0b8f009be9d957ca70c2a88904

Download Submit
C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\LMIGuardianSvc.exe

Filesize
402KB

MD5
34259f50b7826e57ebd146e30ad0c587

SHA1
8b77ca40d195c890d1bfc2ed4b346d55f1bbf4d3

SHA256
8603457211df3f9e74277105db2f6ab1915b99a29b1d1ec540d1442ee50313d2

SHA512
c3646523e941d2e6648ea6cc5b52c55feef7bc5d142052f5647b79d92fe5f2693fae3c650a5766a7b2cd9054b2a197886dcf41051d3d8b10c1f1d3b129414524

Download Submit
C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\config.json

Filesize
344B

MD5
0ad788d7b2eb3c80578a15d4cc0c6204

SHA1
1435918d4a2d69c3291584439ea9e8344e6037db

SHA256
d8817d216de76357c69d813e0f68a7d1c10436c9c480b58fee96eeca077ec899

SHA512
ffabc2163e23da6bc75564566bf83ba61cf81000220dcc387b1d0919cd05ab8ab978f02512c5240bfef314509edd9ab5c1f4858dac5af48af66103244863348b

Download Submit
C:\Users\Admin\AppData\Local\Temp\joi802C.tmp\join.me.exe

Filesize
24.3MB

MD5
7736b24ee7c26ef4159f054fa3f416c6

SHA1
eefafe97e7c23009a62124ce9f9f8743b7f1ffd5

SHA256
c69ba65f27e5289195dfb41b462ab3e1e7568d450592d7eba2d88b063ee84395

SHA512
58f1e61fe2eb8627690a53c4de505d2b22033fb135e5d551e29d8d9d4b01e40b54c6c893b287e9f02520f59fa0ac34a818d0e43c88baa3e13b5af90ec5256e1c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads