c89059a21beae0b8bba76e91804651dc3b108061e875d14f0a145f28b742fe5f

General

Target

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Size

79.3MB
MD5

50f3f26946f1dd189c301f9ea45df96a
SHA1

21ec77de8f6bca1f4099addcf70a6855523ec45c
SHA256

c89059a21beae0b8bba76e91804651dc3b108061e875d14f0a145f28b742fe5f
SHA512

ffe9fb5ef68480d77920c0d5fb5dbf317939a13010cb8a3c356ea4dcbeb7dba626c6875ecb91db146b41dab435a0767f96ea9437c4269819b294748554a42fa6
SSDEEP

1572864:FJn7l/bnMgbFPlERbziF5Y9CbBddFksSjBUuX20jIZ3sM3ZekOFQGhDR/:FbnbPl6Sd7kzUuG0jIZc07OFQGhDR/

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 3 IoCs

Processes:

Q4ou4sS0gHYaRrk.exeCTS.exeQ4ou4sS0gHYaRrk.exe

pid process

1540 Q4ou4sS0gHYaRrk.exe
1996 CTS.exe
1692 Q4ou4sS0gHYaRrk.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
1540	Q4ou4sS0gHYaRrk.exe
1996	CTS.exe
1692	Q4ou4sS0gHYaRrk.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2540 2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Token: SeDebugPrivilege 1996 CTS.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Q4ou4sS0gHYaRrk.exe

pid process

1692 Q4ou4sS0gHYaRrk.exe
1692 Q4ou4sS0gHYaRrk.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Token: SeDebugPrivilege	1996	CTS.exe

pid	process
1692	Q4ou4sS0gHYaRrk.exe
1692	Q4ou4sS0gHYaRrk.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exeQ4ou4sS0gHYaRrk.exe

description	pid	process	target process
PID 2540 wrote to memory of 1540	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	Q4ou4sS0gHYaRrk.exe
PID 2540 wrote to memory of 1540	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	Q4ou4sS0gHYaRrk.exe
PID 2540 wrote to memory of 1996	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 2540 wrote to memory of 1996	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 2540 wrote to memory of 1996	2540	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 1540 wrote to memory of 1692	1540	Q4ou4sS0gHYaRrk.exe	Q4ou4sS0gHYaRrk.exe
PID 1540 wrote to memory of 1692	1540	Q4ou4sS0gHYaRrk.exe	Q4ou4sS0gHYaRrk.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540

C:\Users\Admin\AppData\Local\Temp\Q4ou4sS0gHYaRrk.exe
C:\Users\Admin\AppData\Local\Temp\Q4ou4sS0gHYaRrk.exe
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1540

C:\Users\Admin\AppData\Local\Temp\jds240601609.tmp\Q4ou4sS0gHYaRrk.exe
"C:\Users\Admin\AppData\Local\Temp\jds240601609.tmp\Q4ou4sS0gHYaRrk.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1692

C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
1559b58e3ff6f38a58b97b7d0c871583

SHA1
b757601e188ad1ade55bc7b01bfad3e81fab330f

SHA256
f704781bdf8bad5bc04118ea79511153e4d685b0a7a56eab5fea651427245e55

SHA512
d6d4e2b2e49de19ec2c25ae53abec1e42d88f0dd4037df158e4b18a9654d2827d28b5de6de1a9fe8ab4c435155b2717170ac305bbb60f6d010da897e085c1c55

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C:\Users\Admin\AppData\Local\Temp\Q4ou4sS0gHYaRrk.exe
Filesize
79.2MB

MD5
608914d57c9476b6af49a545d042f4fc

SHA1
a7b9709bfae02ca7ef90c08d38152c12f83e864f

SHA256
3f3b8ecbb0808b15a811ca437767d09e73c04d465729fd1532e296903634461c

SHA512
5e6e9132e3d768f07e3a829743c7e793a60874875458c213a8cfd535d6861927192ffe48b26f127ee4c54ec28dfaf6183ddc36421e585711dd29d9a0b8e740f4

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C:\Users\Admin\AppData\Local\Temp\jds240601609.tmp\Q4ou4sS0gHYaRrk.exe
Filesize
78.8MB

MD5
2e984fc82add25bab8bd9b4e2bb83d0c

SHA1
8319d63c6b593b667f194f2ed2c9216cccaa3ee0

SHA256
25b6669a3cd944c3e80e2fe32267ade7347a44a371d964586bb18d94d2227b37

SHA512
a7526f328e3ea4fb901bf1f811463283be46327332fcafa69e36236451e2b568fcf383aaf313772143a5487faed3f2e9774fdd486d312f647a4a98e16e829fc9

Download Submit
C:\Users\Admin\AppData\Local\Temp\jusched.log
Filesize
307KB

MD5
7d8b78ca97d3d69c00369b11f12b3af0

SHA1
44440c2f620801318b5128f11bd2c649bf59b281

SHA256
4b3225d9dd7925ccb9534dc62a317cb6df750d2a559767500925c3140db15ba9

SHA512
5800995d0c91d8488783d69c2fac1cc136184a3e6e0e599a6dd7c74db5c6719185810284b61ebb30eda4301bf56f55f24380925d2fcb1f4007088a7f408edbcc

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads