cycbot | 19f2389fdb85aed301d76f4a096931e02f05ce40cea7baad98d8b19a92240799

General

Target

JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
Size

165KB
MD5

33113fea902553e5867b933e4876a93c
SHA1

94d85e74a821cf6403ae99db51cffb761b973a84
SHA256

19f2389fdb85aed301d76f4a096931e02f05ce40cea7baad98d8b19a92240799
SHA512

58a0b9a059b49bf49726c0534680160bc57a81b4faa886b8d0b303eb97422ccecde83f5d8ca2feea1affdd93a92b734cd8f0ce54f7303d23bf0c8c897cf927bd
SSDEEP

3072:KeyENP7FGU0uOU6RBUM9d77HbvstVKNvgl15B3CedTUid94fUG:dNQPuOzH9J7mVKNIdCsN

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/4972-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3668-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3668-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3948-132-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3668-133-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/3668-287-0x0000000000400000-0x0000000000491000-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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\13DE3\\5E6C2.exe"	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3668-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4972-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4972-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3668-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3668-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3948-131-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3948-132-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3668-133-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/3668-287-0x0000000000400000-0x0000000000491000-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_33113fea902553e5867b933e4876a93c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 4972	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	85
PID 3668 wrote to memory of 4972	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	85
PID 3668 wrote to memory of 4972	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	85
PID 3668 wrote to memory of 3948	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	95
PID 3668 wrote to memory of 3948	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	95
PID 3668 wrote to memory of 3948	3668	JaffaCakes118_33113fea902553e5867b933e4876a93c.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe startC:\Program Files (x86)\LP\C2E1\D78.exe%C:\Program Files (x86)\LP\C2E1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4972
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33113fea902553e5867b933e4876a93c.exe startC:\Program Files (x86)\E39C5\lvvm.exe%C:\Program Files (x86)\E39C5
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3948

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\13DE3\39C5.3DE

Filesize
600B

MD5
9544b70d3da19408a7a5fa26f9426446

SHA1
539b765fba88e3a3101dc46ab422598c0bf63d7f

SHA256
ab5bfaa542a8cc38eb75c28a825e30956373756e272f86e656c848804bae3041

SHA512
7d9f2867c904ee0782f0fb908db17fa541c65b54180e34be85d0c3c8d7f72c1284fcb9f1681b8a173b450c011de67a692542acf83b27454b1d9f991afcf20496

Download Submit
C:\Users\Admin\AppData\Roaming\13DE3\39C5.3DE

Filesize
996B

MD5
62aeda021a16b6e351f59c0be6a4b613

SHA1
a659bdb70f520e0f82e587db069628c056d9ab1c

SHA256
9c4d3c3025b2d22249c61c66b26bfd924fb4cf7caf6572fde4c3e5b92d847c34

SHA512
7a698357925719c46a58f99dcd6906f86c56e926b91462ac5b5ebffb8f6c48455de8af3d8add9a7f0912f11e1a8a3e420f3c53213c2865aba1f7208bc8d2e465

Download Submit
C:\Users\Admin\AppData\Roaming\13DE3\39C5.3DE

Filesize
1KB

MD5
0f553f552a60c8d21785c0b037c49e35

SHA1
be03f4de1c46c94ee5da5e211b9c4229078440af

SHA256
7b82d92c1c0bc4c9876141a47f475e94c10e7968d7d511c0b6116ce95007e240

SHA512
44150dd942f169c50ee67c151cc48276432bfd8e87b8f8930ba0aca7f56573a56e3d3fd70a011bd51862bd9d085530e21ce2b20f8c65ac604178ce49507631f2

Download Submit
memory/3668-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3668-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3668-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3668-133-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3668-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3668-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3668-287-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3948-131-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3948-132-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4972-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4972-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads