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 4 IoCs

Processes:

mpC6sHXW4h0j3Cb.exeCTS.exempC6sHXW4h0j3Cb.exe

pid process

2456 mpC6sHXW4h0j3Cb.exe
1296 CTS.exe
2768 mpC6sHXW4h0j3Cb.exe
1204
Loads dropped DLL 3 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exempC6sHXW4h0j3Cb.exe

pid process

1764 2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
2456 mpC6sHXW4h0j3Cb.exe
1204
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
2456	mpC6sHXW4h0j3Cb.exe
1296	CTS.exe
2768	mpC6sHXW4h0j3Cb.exe
1204

pid	process
1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
2456	mpC6sHXW4h0j3Cb.exe
1204

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

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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mpC6sHXW4h0j3Cb.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main	mpC6sHXW4h0j3Cb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1764 2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Token: SeDebugPrivilege 1296 CTS.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mpC6sHXW4h0j3Cb.exe

pid process

2768 mpC6sHXW4h0j3Cb.exe
2768 mpC6sHXW4h0j3Cb.exe

description	pid	process
Token: SeDebugPrivilege	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe
Token: SeDebugPrivilege	1296	CTS.exe

pid	process
2768	mpC6sHXW4h0j3Cb.exe
2768	mpC6sHXW4h0j3Cb.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exempC6sHXW4h0j3Cb.exe

description	pid	process	target process
PID 1764 wrote to memory of 2456	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	mpC6sHXW4h0j3Cb.exe
PID 1764 wrote to memory of 2456	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	mpC6sHXW4h0j3Cb.exe
PID 1764 wrote to memory of 2456	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	mpC6sHXW4h0j3Cb.exe
PID 1764 wrote to memory of 2456	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	mpC6sHXW4h0j3Cb.exe
PID 1764 wrote to memory of 1296	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 1764 wrote to memory of 1296	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 1764 wrote to memory of 1296	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 1764 wrote to memory of 1296	1764	2024-04-27_50f3f26946f1dd189c301f9ea45df96a_bkransomware.exe	CTS.exe
PID 2456 wrote to memory of 2768	2456	mpC6sHXW4h0j3Cb.exe	mpC6sHXW4h0j3Cb.exe
PID 2456 wrote to memory of 2768	2456	mpC6sHXW4h0j3Cb.exe	mpC6sHXW4h0j3Cb.exe
PID 2456 wrote to memory of 2768	2456	mpC6sHXW4h0j3Cb.exe	mpC6sHXW4h0j3Cb.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⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764

C:\Users\Admin\AppData\Local\Temp\mpC6sHXW4h0j3Cb.exe
C:\Users\Admin\AppData\Local\Temp\mpC6sHXW4h0j3Cb.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2456

C:\Users\Admin\AppData\Local\Temp\jds259401910.tmp\mpC6sHXW4h0j3Cb.exe
"C:\Users\Admin\AppData\Local\Temp\jds259401910.tmp\mpC6sHXW4h0j3Cb.exe"
3⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2768

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:1296

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

2

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\Temp\jds259401910.tmp\mpC6sHXW4h0j3Cb.exe
Filesize
78.8MB

MD5
2e984fc82add25bab8bd9b4e2bb83d0c

SHA1
8319d63c6b593b667f194f2ed2c9216cccaa3ee0

SHA256
25b6669a3cd944c3e80e2fe32267ade7347a44a371d964586bb18d94d2227b37

SHA512
a7526f328e3ea4fb901bf1f811463283be46327332fcafa69e36236451e2b568fcf383aaf313772143a5487faed3f2e9774fdd486d312f647a4a98e16e829fc9

Download Submit
C:\Users\Admin\AppData\Local\Temp\jusched.log
Filesize
1KB

MD5
2a1b95ca37da3341f5a4f307ec252a17

SHA1
c6c3a0aea04c08a0eb1a530fdcf67e1943ec97c1

SHA256
468043fc69098d56776d29ca302dc5cc330299057171ccfecfdc03f93a434cbd

SHA512
531e28a97fb631d2ee0be0152f32af4eda7f9dea702fb116ddd8bc4e5b3d42fbb5e3269358d92074c9518ef7ac2a1ddc6e2fa24fd068cee57b8862618c335666

Download Submit
C:\Users\Admin\AppData\Local\Temp\jusched.log
Filesize
4KB

MD5
8af0d0bc6ee0b97285d03e092e9ed857

SHA1
f6183514a99ac492c9d804ffcf1f66505ca613dc

SHA256
e8a1061131cc4b084a53a5e383c27c6996f90a411efe3295dec7b21fc5c4c025

SHA512
1fe7d89b59960833f090319d55d7e5172840224f7b6834832324ee196ebc052d793877b1c3954cddaca32f022712c75f3ab36b6cf35d98096624effd9518e9d0

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
\Users\Admin\AppData\Local\Temp\mpC6sHXW4h0j3Cb.exe
Filesize
79.2MB

MD5
608914d57c9476b6af49a545d042f4fc

SHA1
a7b9709bfae02ca7ef90c08d38152c12f83e864f

SHA256
3f3b8ecbb0808b15a811ca437767d09e73c04d465729fd1532e296903634461c

SHA512
5e6e9132e3d768f07e3a829743c7e793a60874875458c213a8cfd535d6861927192ffe48b26f127ee4c54ec28dfaf6183ddc36421e585711dd29d9a0b8e740f4

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads