cycbot | b2942a6f0c86649e5e35ac6a5e1748c953a87c7c27e98d3d6707f22125bba19d

General

Target

9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
Size

169KB
MD5

9d92fe3acbdc5b305c88dbfbc35fa860
SHA1

74c8ff6afe4cdbc427c3c7120ebd4126f56bd5ac
SHA256

b2942a6f0c86649e5e35ac6a5e1748c953a87c7c27e98d3d6707f22125bba19d
SHA512

786116db37f708f23e8d7ff639d270e98a8f91795450f7cae3b61bdfba13c84e9ed20c3b909b165c3dd641854fcb08a431a889c65087d21c1732b75bd9ad3d0f
SSDEEP

3072:eZckfPFOLpIk182brq4vAvG2X7j3bgSr7DHpKWxZ7PUz:4cuFUIk182Cd+o7jrgM7LpKWfQ

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer upx

Malware Config

Signatures

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

Detects Cycbot payload 6 IoCs

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

resource	yara_rule
behavioral1/memory/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1964-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1964-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2892-78-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1964-79-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1964-185-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\5278C\\04BD4.exe"	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1964-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2680-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1964-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1964-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2892-78-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1964-79-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1964-185-0x0000000000400000-0x0000000000491000-memory.dmp	upx

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	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2680	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	30
PID 1964 wrote to memory of 2680	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	30
PID 1964 wrote to memory of 2680	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	30
PID 1964 wrote to memory of 2680	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	30
PID 1964 wrote to memory of 2892	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	32
PID 1964 wrote to memory of 2892	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	32
PID 1964 wrote to memory of 2892	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	32
PID 1964 wrote to memory of 2892	1964	9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe startC:\Program Files (x86)\LP\D4F5\F72.exe%C:\Program Files (x86)\LP\D4F5
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9d92fe3acbdc5b305c88dbfbc35fa860_JaffaCakes118.exe startC:\Program Files (x86)\8CA61\lvvm.exe%C:\Program Files (x86)\8CA61
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\5278C\CA61.278

Filesize
1KB

MD5
f940e44677ec6f3b549b8506e2b69ea8

SHA1
3cb48eb3e6f066dfc08f49d66ac150d52c4b14be

SHA256
8cff114801e26fe0145c7ad6cd3e9c0a8baecac40d250e02d1af5750d2b178af

SHA512
902c9108a9288ccbf1dafebc129100168ab45a64c44acd8f95e6b2b8ae5ad4d315a26d1f49382ac63c11acedca36069d7a619d4fff37153167d674adb281c991

Download Submit
C:\Users\Admin\AppData\Roaming\5278C\CA61.278

Filesize
600B

MD5
e8081fbe641d04bdb3261aee5a98a482

SHA1
f0ae84965919127f77bfb2a9f2c931a2edb07232

SHA256
aff062eb4534627d5287756c53c7413f1891c3a8fa8043c1b910b6f09d21d565

SHA512
915fd65b85652b2a23458ab9fb62891f97519debff0259f1bb5b3424dcfbf1a5b23452722f60700a6761b7d62da3b9d699aba4cee4fac42a0bb6161cde923ceb

Download Submit
C:\Users\Admin\AppData\Roaming\5278C\CA61.278

Filesize
996B

MD5
af2602b9e82914130c4c9892d6fe6d30

SHA1
7a7c0ed1ccdbe97a68d9d93521c0ef7542a1c1b1

SHA256
457d0bd83417b73a0f9e1cf21656642771ac507217467a3ce7d0d642d1f49a30

SHA512
5eb1cc271bb6e8ac658187ec0a5452c6d57cb0748e9eade6cf822625bcbf3f4402a47a42119192fb1ec8fb6476bc9766caba992b632c513ae5fe29c64bd433c4

Download Submit
memory/1964-79-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1964-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1964-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1964-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1964-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1964-185-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2680-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2892-78-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads