cycbot | c993d4020006ebb34e761d0c95a8a8ae1e344b4f6c390b2303c4ae08dd5b84fe

General

Target

dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
Size

183KB
MD5

dbdf13270adabecd0b98d63112bb426b
SHA1

32b3f12d92e330fa581877a841f7b5a93a9ea127
SHA256

c993d4020006ebb34e761d0c95a8a8ae1e344b4f6c390b2303c4ae08dd5b84fe
SHA512

78d701b3d95ef92e04b1a468c427a3ea76d552c3be8091396820688d0eecad60e1296c39d6edb15ef829ad6aec4d9f83616e3f2e995ac7842a380623313d4505
SSDEEP

3072:Mf3ZM5wD0eDxS7txhF7BiOk+5cOWAuEA7LNr3lsT6O8vaUO/NwbX850pMIWqojEW:SpM5MSJxhdBiOk+5cOvA7LR46O8v5Zit

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/1864-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4532-16-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4532-81-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4916-86-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4532-192-0x0000000000400000-0x000000000046E000-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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4532-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/1864-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/1864-12-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/1864-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4532-16-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4532-81-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4916-84-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4916-86-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4532-192-0x0000000000400000-0x000000000046E000-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	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 1864	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	82
PID 4532 wrote to memory of 1864	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	82
PID 4532 wrote to memory of 1864	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	82
PID 4532 wrote to memory of 4916	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	83
PID 4532 wrote to memory of 4916	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	83
PID 4532 wrote to memory of 4916	4532	dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1864
- C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\dbdf13270adabecd0b98d63112bb426b_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4916

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\9450.037

Filesize
1KB

MD5
af954add2cf0773117f7b51ae478e7f1

SHA1
1ce23d1e33f919e6ed90b9f6689eeb29beb2abb4

SHA256
09efd8d6dd752032eccd08e007b1cdfa5c8b7967def983797d6d0bb920dff742

SHA512
41a511a77ab95635e90e8e8e558a323f79868a76f0f7843c7922a49af30008ae4daa5f034dc07d17d932d9b63f09e064710ed0df00aa097bf04bde9f6e821ec3

Download Submit
C:\Users\Admin\AppData\Roaming\9450.037

Filesize
600B

MD5
62ce9183c933418daff8464c44f2dd81

SHA1
40ba6d65948baf64a8b6700779bc09da0bd1629f

SHA256
c32f5f35a385b1fa79a03f69d986e6f8fef93e40fef421fd0f8e6a2a181684c4

SHA512
74be4889f71412d2bd5a3c5b8cb594bb77ce305acbba4a089852ebb7eb8299a7bda31b32bc0ade8c4ec652b3e54f2f3a84bd2469cae46da8adcaa1b1781b93c7

Download Submit
C:\Users\Admin\AppData\Roaming\9450.037

Filesize
996B

MD5
9c9b9609945d4e8fdb3062d262445180

SHA1
281a4d6ed4e19e623c93d5ff262649351d5058f2

SHA256
91237323228a165b256ee17c0cf42b18ef3fd9d6042613c2082e90eb2630e558

SHA512
1f0d843ce60d9911a18d768ffed946365e03494e69076361d869d9ae4b8b1e8a4b80d50b2af0d2ca5d0f12c23fb7320a41966d8a5ac5d60b5f30086abb23202d

Download Submit
memory/1864-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1864-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1864-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4532-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4532-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4532-81-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4532-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4532-192-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4916-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4916-84-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4916-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads