cycbot | 1a71afe1b7c1808b098cbbc80ef8341535ed226048a2cdfc5e70073193ccc85a

Reason

Machine shutdown

General

Target

JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe
Size

467KB
MD5

9744a4bd414f25dbafcbc9be1f6bfaf5
SHA1

70a1e83572f04db593e7566398b83bc2b8439150
SHA256

1a71afe1b7c1808b098cbbc80ef8341535ed226048a2cdfc5e70073193ccc85a
SHA512

f3496a58e18c721f25a9e385be427bac6ca9cef601245e8fb9020cf6d9290e444dd80a573c8160a1e8535944717ca304790a117e8cde6e72db223d4622bfde86
SSDEEP

12288:eevI/fxAG1HRswo4pjAVFWrQrQYsK5debb:xvsaoRXpjAVu3YsKTev

Score

10^/10

cycbot backdoor bootkit discovery persistence rat upx

Malware Config

Signatures

Cycbot
Cycbot is a backdoor and trojan written in C++..
backdoor rat cycbot
Cycbot family
cycbot

Detects Cycbot payload 2 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral2/memory/2832-37-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot
behavioral2/memory/2316-43-0x0000000000400000-0x000000000044B000-memory.dmp	family_cycbot

Executes dropped EXE 5 IoCs

pid	Process
3648	75274115.exe
1124	ab91c0a0.exe
3744	5a88085a.exe
2832	5a88085a.exe
2316	conhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\conhost.exe"	5a88085a.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	ab91c0a0.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3744-24-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/2832-31-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/2832-37-0x0000000000400000-0x000000000044B000-memory.dmp	upx
behavioral2/memory/2316-43-0x0000000000400000-0x000000000044B000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 5 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	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	75274115.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab91c0a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5a88085a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1124	ab91c0a0.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5336 wrote to memory of 3648	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	86
PID 5336 wrote to memory of 3648	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	86
PID 5336 wrote to memory of 3648	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	86
PID 5336 wrote to memory of 1124	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	87
PID 5336 wrote to memory of 1124	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	87
PID 5336 wrote to memory of 1124	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	87
PID 5336 wrote to memory of 3744	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	88
PID 5336 wrote to memory of 3744	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	88
PID 5336 wrote to memory of 3744	5336	JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe	88
PID 3744 wrote to memory of 2832	3744	5a88085a.exe	91
PID 3744 wrote to memory of 2832	3744	5a88085a.exe	91
PID 3744 wrote to memory of 2832	3744	5a88085a.exe	91
PID 5380 wrote to memory of 2316	5380	cmd.exe	92
PID 5380 wrote to memory of 2316	5380	cmd.exe	92
PID 5380 wrote to memory of 2316	5380	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9744a4bd414f25dbafcbc9be1f6bfaf5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5336
- C:\Users\Admin\AppData\Local\Temp\75274115.exe
  C:\Users\Admin\AppData\Local\Temp\75274115.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Users\Admin\AppData\Local\Temp\ab91c0a0.exe
  C:\Users\Admin\AppData\Local\Temp\ab91c0a0.exe
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1124
- C:\Users\Admin\AppData\Local\Temp\5a88085a.exe
  C:\Users\Admin\AppData\Local\Temp\5a88085a.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Users\Admin\AppData\Local\Temp\5a88085a.exe
    C:\Users\Admin\AppData\Local\Temp\5a88085a.exe startC:\Users\Admin\AppData\Roaming\dwm.exe%C:\Users\Admin\AppData\Roaming
    3⤵
    - Executes dropped EXE
    PID:2832

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:5380
- C:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2316

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

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\5a88085a.exe

Filesize
177KB

MD5
bcdf2d4b035b4728ab54ff1ef8510be8

SHA1
28454bb6a086c9a93b8053e1d7b8a78e5098542a

SHA256
4d5a241845c90174038021cdd5e730e99a2282cce051915ce56149093e3d9de3

SHA512
d5f89c2d63f8b8307f77b68a34ba01b2be696a3169191e58d09676f90871a16d57b963412a4fb88fe34a915d18cab26017248f259f01ec0c1e81b16d7b25a1b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\75274115.exe

Filesize
18KB

MD5
2d739c82071c718e748e9026ca074208

SHA1
0e053115f1953da4392e653b8d2a3128fba8f707

SHA256
6656660333182d69b7f4533b532e639151cd4dbd6cf6962daa5f2b6859bae4df

SHA512
0dca57d252d1a960f7e9ef2c98d336191d93dce0a478ed35aefe9cf06abafc1c7c760341bf3a9a4129baee54b84953498bf5d81fd9111b95a99d60c3baabc303

Download Submit
C:\Users\Admin\AppData\Local\Temp\ab91c0a0.exe

Filesize
229KB

MD5
3666be7d20dddc2b2b43cde418c6decc

SHA1
c1a224b698c99b20b9e2e8f3a68853cf37a521a9

SHA256
8ed9ac5c251051aa7667ec29a433f5e0f136df60adaf2afe987e819d4ea38a59

SHA512
b82d5fa72e830349dd189b57ac3c86d1563db51a979f994b995c83f9c1cf2a44c6d68f0397f5b96044931c2b07a5564a1be4a2e33efc9baeef3ed59444202684

Download Submit
memory/1124-22-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1124-20-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1124-19-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/1124-21-0x0000000000400000-0x0000000000465000-memory.dmp

Filesize
404KB

Download
memory/2316-43-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2832-31-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2832-37-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3648-44-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3648-12-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3648-32-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3648-7-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3744-24-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/5336-1-0x00000000021C0000-0x0000000002238000-memory.dmp

Filesize
480KB

Download
memory/5336-18-0x00000000021C0000-0x0000000002238000-memory.dmp

Filesize
480KB

Download
memory/5336-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5336-2-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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