cycbot | 894c891dc44384c687238b7142c0a6934261be7151cc4ee41c9462d86d1f9f63

General

Target

dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
Size

179KB
MD5

dbb6858d9e9275405404c40bf5c39cb4
SHA1

18ce267bb4529b297bad971f758b310ac7b27124
SHA256

894c891dc44384c687238b7142c0a6934261be7151cc4ee41c9462d86d1f9f63
SHA512

28d4fc9736165fd7afea55e0311d00a74014442e8283a362b4b1297977362f2d351e39aba1a64b27204f592699eb5e6e436d86a09be3a721c4d5b1600a987121
SSDEEP

3072:O8Dd7ZvPeBjWR9zvOon0AGtG2JHOV9FZ5OwqAc9z4qUiwGtlZNxRCfn:O8D5ZO1WRFJ0Az2scAwlFNxwfn

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 5 IoCs

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

resource	yara_rule
behavioral2/memory/116-13-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3040-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3040-70-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3484-75-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/3040-190-0x0000000000400000-0x000000000048D000-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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3040-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/116-13-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3040-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3040-70-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3484-73-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3484-75-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/3040-190-0x0000000000400000-0x000000000048D000-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	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 116	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	83
PID 3040 wrote to memory of 116	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	83
PID 3040 wrote to memory of 116	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	83
PID 3040 wrote to memory of 3484	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	90
PID 3040 wrote to memory of 3484	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	90
PID 3040 wrote to memory of 3484	3040	dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\dbb6858d9e9275405404c40bf5c39cb4_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3484

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\66CE.81C

Filesize
1KB

MD5
ea79ce0a156182c37941b1e7e3353e15

SHA1
1c35d732bae8d7ac8cd9292b9c50553b2894107f

SHA256
df94d2d8eb8b3b13c8b485bdbdec3ebcffc3c6479560069687577669f59f5118

SHA512
56216ade48fafe25e16e6c489baa44e13295aabca3cec9ce7bc21ee06be3b5e2af900a640fd77183bd6078be265347820a4efea7f555833194acff40ae4ffc83

Download Submit
C:\Users\Admin\AppData\Roaming\66CE.81C

Filesize
600B

MD5
16a3f7498b4328182762e4d4b5db1b11

SHA1
26cf8affb9f1764c884c8d7be7e71fc7b5fb45bb

SHA256
f60ecc02eb054a2811f9b7d69b2404946fa528ae8fd45efa7013b52a67e3a5ea

SHA512
13aa40abe5cdc76a983d95438e531a286dd6460784f396910f9a3652f38845a6386ce2049a2451bcd5fda229e95902178b7f3b721d400e5dcf714ddaeb69bb89

Download Submit
C:\Users\Admin\AppData\Roaming\66CE.81C

Filesize
996B

MD5
cab5a7e441719af12d233e062f849503

SHA1
135bbae07576e3aa75625a86e07ef941bfcad1ac

SHA256
ec621acba07ba2869db6afc84ac0f1bce4c1c5604fedcf353b89cb605a31a27c

SHA512
dbf769bb9c6efb70dc31dd8dd630014860a082f830fb21cb811164bdd0a2cdc4dbdaa52a6a3d548c7a3144f805f67a2a8f586f2d630d5f99b58df52b2a1428df

Download Submit
memory/116-13-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3040-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3040-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3040-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3040-70-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3040-190-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3484-72-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3484-73-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/3484-75-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads