cycbot | 8850b727f8482bbf8a4b5fbfb7e79df6c66836365fa86c49f3ee2f6a0f6306a2

General

Target

JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe
Size

165KB
MD5

69e4502eecbc587f03a0af483fc5c4e9
SHA1

1ed044044987a6e41c4494b81317aad5ab1717ef
SHA256

8850b727f8482bbf8a4b5fbfb7e79df6c66836365fa86c49f3ee2f6a0f6306a2
SHA512

be93584c5b4ddafdb44096c935b017d9085d954c7cc72c2669e301e2dd88e5be73e41892ed10f1de138f1720a4862ceeb33b381afd8f697e0f391d188d145ffd
SSDEEP

3072:26wzTbiNJa0QyDNKKRh9IXAoStBYAeTCRKnOs4E55FmGxSGf2V+:CzKN00QfOtHKIvElmKfq+

Score

10^/10

cycbot backdoor 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 6 IoCs

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

resource	yara_rule
behavioral2/memory/4416-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/404-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/404-18-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3328-142-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/404-143-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/404-309-0x0000000000400000-0x0000000000490000-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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\3EDF8\\C41F9.exe"	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/404-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4416-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4416-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/404-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/404-18-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3328-141-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3328-142-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/404-143-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/404-309-0x0000000000400000-0x0000000000490000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_69e4502eecbc587f03a0af483fc5c4e9.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 404 wrote to memory of 4416	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	84
PID 404 wrote to memory of 4416	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	84
PID 404 wrote to memory of 4416	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	84
PID 404 wrote to memory of 3328	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	90
PID 404 wrote to memory of 3328	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	90
PID 404 wrote to memory of 3328	404	JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:404
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe startC:\Program Files (x86)\LP\F9D3\59B.exe%C:\Program Files (x86)\LP\F9D3
  2⤵
  PID:4416
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69e4502eecbc587f03a0af483fc5c4e9.exe startC:\Program Files (x86)\F8258\lvvm.exe%C:\Program Files (x86)\F8258
  2⤵
  PID:3328

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

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\Roaming\3EDF8\8258.EDF

Filesize
300B

MD5
d0f0c7cf217bd68599d461de382e1214

SHA1
a65946295abeea4eca4e9a73b04980bcd8a3e077

SHA256
fb6567552dffa7daf17a7dc6307dd41c1e0149b064441d3bf99ea987d05cfe73

SHA512
897fe05c34194c2ed2b475be9f69337d656addc4aadb23a788eebc41850b753c88e489eed380e6669f8bd55b8826e358a927e1d0dc5946daac09ecdcfa612db1

Download Submit
C:\Users\Admin\AppData\Roaming\3EDF8\8258.EDF

Filesize
996B

MD5
f1cb38df00024f1b557f4278a6ecf6f4

SHA1
79c7298cc73acff8b1e04b393fdcd46cd897b6d1

SHA256
fd438da13be973dbb276882e9f49a6a7aaf2b2360b617553d50337b328391df8

SHA512
8eeadcfa5c431a151687bd22b3e3f692d756be8215fc08afd9e685eb65b4c73ef1eb9bbe02377668fc6c31db85d4ff400238c0f1c2006e898f4e31a89e9491e2

Download Submit
C:\Users\Admin\AppData\Roaming\3EDF8\8258.EDF

Filesize
600B

MD5
cf43f3bc791728ea1484a81eea818804

SHA1
53000278490c40f4d437d1ed5c84ee51214d18a3

SHA256
7cd9609420107878557d28ef3b26293543816b76f6e01f00dd9ddec1d2deb3cd

SHA512
603d44f445a7d40da9ac6c75cb2b83d5a9fae307d8c76591cc80449c09bdedf1399e5bbfa9f48efb338c7b034322685ad52a8edfde0866e1dd1f84765f84f853

Download Submit
C:\Users\Admin\AppData\Roaming\3EDF8\8258.EDF

Filesize
1KB

MD5
d850cb6c5e44d70c8f5506c8ad6f1484

SHA1
9b32f7cf5f7464e6a27f566415c965efcb2b81c0

SHA256
9c84cb3e7c6a768bfa8b1f4fbf859335c7cc9d7626bdf8411e83dee84efbf4b3

SHA512
7c33b5cd7b73700f6390a1e3647b9eac919af851f0710dcb39cf90583671c8b55e9a3cb7a5dd5b3bf572759966220a7b85c54fddc91b2a4149544ec3cfe9df30

Download Submit
memory/404-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/404-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/404-18-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/404-143-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/404-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/404-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/404-309-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3328-141-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3328-142-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4416-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4416-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads