badrabbit | f1bbcc5c678d174d858ae089f4494e3ea8bcfc418098d61804a15e437f08aff7

Target

Endermanch@ProgramOverflow.exe
Size

566KB
MD5

c4aab3b24b159148d6d47a9e5897e593
SHA1

7061c2e85de9f3fd51cccdecb8965f1e710d1fe5
SHA256

03a4d3563a7519542c662b5fd5d61215f3d76a3902717efe11230292ea4bbafc
SHA512

9bc522ff0d598a1f1425a09a2794584c4991a99bc382b0ee9135311950cdbf2f5331ae041a4b01052735b5fae3a2763ea1b5c01ce679b07fba73c6f75cb4c252

Score

10^/10

badrabbit ransomware

Malware Config

Signatures

BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
ransomware badrabbit
Executes dropped EXE 1 IoCs

Processes:

8A3B.tmp

pid process

2192 8A3B.tmp

pid	process
2192	8A3B.tmp

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\ReceiveOptimize.tiff	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\SuspendSwitch.tiff	rundll32.exe

Drops file in Windows directory 4 IoCs

Processes:

rundll32.exe

description	ioc	process
File created	C:\Windows\cscc.dat	rundll32.exe
File created	C:\Windows\dispci.exe	rundll32.exe
File opened for modification	C:\Windows\8A3B.tmp	rundll32.exe
File opened for modification	C:\Windows\infpub.dat	rundll32.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

3876 schtasks.exe
3492 schtasks.exe

pid	process
3876	schtasks.exe
3492	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

rundll32.exe8A3B.tmp

pid	process
3800	rundll32.exe
3800	rundll32.exe
3800	rundll32.exe
3800	rundll32.exe
2192	8A3B.tmp
2192	8A3B.tmp
2192	8A3B.tmp
2192	8A3B.tmp
2192	8A3B.tmp
2192	8A3B.tmp
3800	rundll32.exe
3800	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

rundll32.exe8A3B.tmp

description	pid	process
Token: SeShutdownPrivilege	3800	rundll32.exe
Token: SeDebugPrivilege	3800	rundll32.exe
Token: SeTcbPrivilege	3800	rundll32.exe
Token: SeDebugPrivilege	2192	8A3B.tmp

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

rundll32.exerundll32.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2300 wrote to memory of 3800	2300	rundll32.exe	rundll32.exe
PID 2300 wrote to memory of 3800	2300	rundll32.exe	rundll32.exe
PID 2300 wrote to memory of 3800	2300	rundll32.exe	rundll32.exe
PID 3800 wrote to memory of 4020	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 4020	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 4020	3800	rundll32.exe	cmd.exe
PID 4020 wrote to memory of 1520	4020	cmd.exe	schtasks.exe
PID 4020 wrote to memory of 1520	4020	cmd.exe	schtasks.exe
PID 4020 wrote to memory of 1520	4020	cmd.exe	schtasks.exe
PID 3800 wrote to memory of 744	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 744	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 744	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 2272	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 2272	3800	rundll32.exe	cmd.exe
PID 3800 wrote to memory of 2272	3800	rundll32.exe	cmd.exe
PID 744 wrote to memory of 3492	744	cmd.exe	schtasks.exe
PID 744 wrote to memory of 3492	744	cmd.exe	schtasks.exe
PID 744 wrote to memory of 3492	744	cmd.exe	schtasks.exe
PID 3800 wrote to memory of 2192	3800	rundll32.exe	8A3B.tmp
PID 3800 wrote to memory of 2192	3800	rundll32.exe	8A3B.tmp
PID 2272 wrote to memory of 3876	2272	cmd.exe	schtasks.exe
PID 2272 wrote to memory of 3876	2272	cmd.exe	schtasks.exe
PID 2272 wrote to memory of 3876	2272	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Endermanch@ProgramOverflow.exe
"C:\Users\Admin\AppData\Local\Temp\Endermanch@ProgramOverflow.exe"
1⤵
PID:728

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\infpub.dat",#2 15
1⤵
- Suspicious use of WriteProcessMemory
PID:2300

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe C:\Windows\infpub.dat,#1 15
2⤵
- Modifies extensions of user files
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3800

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Delete /F /TN rhaegal
3⤵
- Suspicious use of WriteProcessMemory
PID:4020

C:\Windows\SysWOW64\schtasks.exe
schtasks /Delete /F /TN rhaegal
4⤵
PID:1520

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 1976648903 && exit"
3⤵
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /RU SYSTEM /SC ONSTART /TN rhaegal /TR "C:\Windows\system32\cmd.exe /C Start \"\" \"C:\Windows\dispci.exe\" -id 1976648903 && exit"
4⤵
- Creates scheduled task(s)
PID:3492

C:\Windows\SysWOW64\cmd.exe
/c schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 13:09:00
3⤵
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /SC once /TN drogon /RU SYSTEM /TR "C:\Windows\system32\shutdown.exe /r /t 0 /f" /ST 13:09:00
4⤵
- Creates scheduled task(s)
PID:3876

C:\Windows\8A3B.tmp
"C:\Windows\8A3B.tmp" \\.\pipe\{B1285CBF-A5CE-41C2-A5C5-90915EDEE9DC}
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2192

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\8A3B.tmp
MD5
347ac3b6b791054de3e5720a7144a977

SHA1
413eba3973a15c1a6429d9f170f3e8287f98c21c

SHA256
301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

SHA512
9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

Download Submit
C:\Windows\8A3B.tmp
MD5
347ac3b6b791054de3e5720a7144a977

SHA1
413eba3973a15c1a6429d9f170f3e8287f98c21c

SHA256
301b905eb98d8d6bb559c04bbda26628a942b2c4107c07a02e8f753bdcfe347c

SHA512
9a399916bc681964af1e1061bc0a8e2926307642557539ad587ce6f9b5ef93bdf1820fe5d7b5ffe5f0bb38e5b4dc6add213ba04048c0c7c264646375fcd01787

Download Submit
memory/728-2-0x00000000006F0000-0x00000000006F1000-memory.dmp

Filesize
4KB

Download
memory/744-7-0x0000000000000000-mapping.dmp

Download
memory/1520-6-0x0000000000000000-mapping.dmp

Download
memory/2192-10-0x0000000000000000-mapping.dmp

Download
memory/2272-8-0x0000000000000000-mapping.dmp

Download
memory/3492-9-0x0000000000000000-mapping.dmp

Download
memory/3800-3-0x0000000000000000-mapping.dmp

Download
memory/3800-4-0x0000000001220000-0x0000000001288000-memory.dmp

Filesize
416KB

Download
memory/3876-13-0x0000000000000000-mapping.dmp

Download
memory/4020-5-0x0000000000000000-mapping.dmp

Download