cycbot | dd41d88fbde6ca80a88dd8d25ad258d962e239d585772fec6d1f4988349e1aa3

General

Target

fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
Size

168KB
MD5

fbdd103ae86d23f7e3f4d993d4a570cc
SHA1

f8f7231787d46581876460247f6a17fd7c54062b
SHA256

dd41d88fbde6ca80a88dd8d25ad258d962e239d585772fec6d1f4988349e1aa3
SHA512

cf96502eb2ebdfe72f7fd27a29b349e78a1d80e120a4d336dc95d5d9d711a8405dbbbb0d6ab73a753ff20d516a460b13470a58f50aeb9a06d1e797f604f2ed2b
SSDEEP

3072:Y95qQ/o5bLwW38yiOMqVba3ocoz0y3u9oOq1Pvf1ubAgPnv7oFIpHf7n:Y95qQgbd8EMqg3EzFu9E1Pvf1yPnjbNb

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/1648-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1668-15-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1668-76-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2228-82-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/1668-192-0x0000000000400000-0x000000000046A000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fbdd103ae86d23f7e3f4d993d4a570cc_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/1668-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1648-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1648-5-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1668-15-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1648-77-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1668-76-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2228-82-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2228-81-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/1668-192-0x0000000000400000-0x000000000046A000-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	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1648	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	31
PID 1668 wrote to memory of 1648	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	31
PID 1668 wrote to memory of 1648	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	31
PID 1668 wrote to memory of 1648	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2228	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2228	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2228	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2228	1668	fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1648
- C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fbdd103ae86d23f7e3f4d993d4a570cc_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2228

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

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Downloads

C:\Users\Admin\AppData\Roaming\088F.37F

Filesize
1KB

MD5
448358e692d8d7fcdc9d0946317f5a03

SHA1
3571608a4cd2933fadac0815a6a948c3588b02fd

SHA256
ab72439e54dedba19bbbbcca6f90f8c1626a6b5978003cccb01f69f4a3bcc644

SHA512
0536e70cf8bbb5f0c5093f943baea86f72c63405949c987f38e902cc95e94d09bb190215ad0efb0a95393ef1b33d7ce4885972399180b86bbd29f995fedf7f43

Download Submit
C:\Users\Admin\AppData\Roaming\088F.37F

Filesize
600B

MD5
b13ce5f62b09aa00035812ba95232863

SHA1
ca9105753847bcfb35a93514238b91f80ec5a720

SHA256
56811221469fb4474bed9848f23ca2ee4ca214647cdb523f437fe52b469ecbb8

SHA512
effb77b2dba81373b286937e765ecb0c930364d52d5aad8816697efe11abffab9216429cef3ea0040517ba964f187140a102418530dedacfb5dcba22f032edc2

Download Submit
C:\Users\Admin\AppData\Roaming\088F.37F

Filesize
996B

MD5
cbc468ee401130fe0125bae51ac74119

SHA1
b8573000a393356ab99292662154fe6d25f302fc

SHA256
fff5bc2efcc3b1c38fef5082b1afa1fd576472d9f1998be7bbd2c5d158b956df

SHA512
3af2d7680fae520d2637c95950f62e1c31faaac3bad6cbfb4a41c7e9cfb70368f3f34301b9f01226c80efdd4a5819fea1495a86dd1ab7472cee1159f506f3f1d

Download Submit
memory/1648-5-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1648-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1648-77-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1668-15-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1668-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1668-76-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1668-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/1668-192-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2228-79-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2228-82-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2228-81-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads