cycbot | 115778cb6b108a352067dde28c6103984fbab308cde9d7ca2feead2880e9b902

General

Target

JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
Size

198KB
MD5

23926d93aad09bb1d28e515ae0a38fe9
SHA1

911794bbe0881084a84543aa0fe57aa366db132a
SHA256

115778cb6b108a352067dde28c6103984fbab308cde9d7ca2feead2880e9b902
SHA512

4d8d2cadda2bb48129457d5c677b2a532415b80f75bd482f5faa3559ad8e16f6d02a21960243506125c6ecc40fb9ae5fcc747183335d242c6e8abb53cc9abdb5
SSDEEP

3072:SVdlbP/jb06exMa06yYuvFoV5aPMNgdSkXaIrV5NgMYXGuMt8fGx:StLLb1QM6yYPyMgdSkqIx5NaWutO

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2736-8-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2996-17-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2504-87-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2996-88-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2996-194-0x0000000000400000-0x000000000048B000-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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2996-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2736-5-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2736-7-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2736-8-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2996-17-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2504-86-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2504-87-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2996-88-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2996-194-0x0000000000400000-0x000000000048B000-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	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2736	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	30
PID 2996 wrote to memory of 2736	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	30
PID 2996 wrote to memory of 2736	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	30
PID 2996 wrote to memory of 2736	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	30
PID 2996 wrote to memory of 2504	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	32
PID 2996 wrote to memory of 2504	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	32
PID 2996 wrote to memory of 2504	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	32
PID 2996 wrote to memory of 2504	2996	JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_23926d93aad09bb1d28e515ae0a38fe9.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504

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\8373.E36

Filesize
1KB

MD5
70f54444c60650a4ffb2e665797d8d39

SHA1
e33b6572f774bb352cb2ed91eecbe96a94e1708b

SHA256
31331474707a96e42751b3e1e921e704287e6976938ef631e84df936d6d8965d

SHA512
41da285784e86479ddc673bbe013576b12306d17dba335e143d771625359c4b14b09f0acb52db3e03d1aa624cf713cdabf8b58dd68f988b8bb3ecb12769b9932

Download Submit
C:\Users\Admin\AppData\Roaming\8373.E36

Filesize
600B

MD5
dbef470a446c58315128c3e9951328ad

SHA1
4ee7131c528c0c5e17ad52413956975f9aaf771e

SHA256
fb642ee75dcd7943fafdcd01aecd0d12585fd8cae51383b77d78ce7774e6247c

SHA512
ce488a6d04c21d7786a0ad9c6e1673f931a49ad60b2003eb36f8185d6fd3fd96cc399a9102f5ad2d22bc87893ab57928fe3aaecf28ad41183e4d341f9c935730

Download Submit
C:\Users\Admin\AppData\Roaming\8373.E36

Filesize
996B

MD5
c12484f415c0c6e8a127b5b4ffd8b2c0

SHA1
2e1c95b740dd80d45a3e2d08187e1784fa3552b8

SHA256
d98259d67de8642a6b7c8e89f6fa79588561136e6a73bc6c1dae914397b4760b

SHA512
65ab9d04d5aee040d33a18a4908583fd2c8ca5e2ebf5129bf1e5592663bb46749fdbaeec08a22ede4d7a1b7ffec6eeeb84343746745ddebb12d3eaf711435ee6

Download Submit
memory/2504-87-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2504-86-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2736-7-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2736-8-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2736-5-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2996-17-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2996-1-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2996-88-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2996-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2996-194-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads