cycbot | c4bb922ff26e04fd6d30248faa50f8cc5d5da43f4dec108bebed332f1a358eeb

General

Target

d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
Size

182KB
MD5

d80febbb809a82278e7575c633be76ff
SHA1

74786876d71d4a66d011c8dedc52a0c46a06bce8
SHA256

c4bb922ff26e04fd6d30248faa50f8cc5d5da43f4dec108bebed332f1a358eeb
SHA512

e83dfe41d08a400369bf5537abf1e236a8bfd9ea2d7a04546dca2e037a2decb4767b58b73bca6aed88ea9bab4ea7901cd34e497df578129dec80aec41ccdb867
SSDEEP

3072:qSv0Vo4ONwZeAL6+is5vZZG2JmxAkUAdcWqzNdppMa5nvbM12OAB:xQXunsdZZGCmxXdxnkM12O

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/2112-8-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2476-15-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2476-79-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/1912-83-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2476-84-0x0000000000400000-0x0000000000466000-memory.dmp	family_cycbot
behavioral1/memory/2476-173-0x0000000000400000-0x0000000000466000-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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	d80febbb809a82278e7575c633be76ff_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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2476-2-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-8-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2112-6-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2476-15-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2476-79-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1912-81-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1912-83-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2476-84-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/2476-173-0x0000000000400000-0x0000000000466000-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	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 2112	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	30
PID 2476 wrote to memory of 2112	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	30
PID 2476 wrote to memory of 2112	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	30
PID 2476 wrote to memory of 2112	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	30
PID 2476 wrote to memory of 1912	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	33
PID 2476 wrote to memory of 1912	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	33
PID 2476 wrote to memory of 1912	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	33
PID 2476 wrote to memory of 1912	2476	d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112
- C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d80febbb809a82278e7575c633be76ff_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1912

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\4E19.3B7

Filesize
1KB

MD5
a935ab95b23147cc368c0c86a7b8f58c

SHA1
53703deb41278e90ee0092cfd78848eb6a28480d

SHA256
4c96a794a381002763a56993558300339a02e12d197807cb9c3a83a4b2f97763

SHA512
f1d5bbd726008dffc201cd91a1b6388b649b7aea4c895d3817b6f21f1f1e8097b32aa4f3d34e81278eeb8297140c24ee4f34ae889d56c47656ec727aa8fad64a

Download Submit
C:\Users\Admin\AppData\Roaming\4E19.3B7

Filesize
600B

MD5
02c3940fa5dc44852fcffefb473c9667

SHA1
7cf674b836c8b468db53dcd32b2aa1912efc9248

SHA256
2ba5ad38206bb1678b03a277b1a2d484fd3761d053d0a1c7e28cce2364778983

SHA512
a9bc3fb5e349f7c7be3992aa7d73e249696734c2f8fb489c169f1ef2af1f21bf66dbff53dcbf6ad0cdd619bce0c2b41e5e7c6477433f1da1c7c4072cba8b7d86

Download Submit
C:\Users\Admin\AppData\Roaming\4E19.3B7

Filesize
996B

MD5
5641690b7312318b479cd8f81782a21a

SHA1
2ed08efe578ecc0241c2e222c29a6dc56f985caf

SHA256
c45f12222ddd43d2d764fd5d94adb1a22cf4737a21ab565bf34f8a897d021fb0

SHA512
85a118cdcc38daca69c9f1f2448dbece48a8fbbfa0cf101e2d43cbf75b0ee34bc56d31ba8de2671e72fba1674c80c168ff21cf69f8db203f45b9cc1e0c397224

Download Submit
memory/1912-83-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1912-81-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-5-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-6-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2112-8-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-15-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-79-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-1-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-84-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-2-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2476-173-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads