cycbot | b5ebd1807c7ba566efa0aa67411e13dcc41a2474a5c210d915dadd9e34c31cce

General

Target

ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Size

186KB
MD5

ffb1758d5658f6b3158e3f547571f581
SHA1

7a0a5b3ca7725de8fea6a8b4fc3548acb92ae4b9
SHA256

b5ebd1807c7ba566efa0aa67411e13dcc41a2474a5c210d915dadd9e34c31cce
SHA512

d7172613b9cc9d61464e2eafbb04b6623cca4bae28d5557b95ad9a0ce910d4ab19f9c9a5f245edc805157e552a2a981e3299ab1ffcf193a12429adbd045e7b0b
SSDEEP

3072:vAhjPlxyPDatxM8NMW9jKIkV6kSSp91vorArlX3PyYgJcigrJBc4lj0g1jEW:vAhblxg2kZE7FSprvswaAiS/VljrE

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/4860-13-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral2/memory/2908-14-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral2/memory/2908-75-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral2/memory/4448-79-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral2/memory/2908-189-0x0000000000400000-0x000000000048C000-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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2908-2-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/4860-12-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/4860-13-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/2908-14-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/2908-75-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/4448-78-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/4448-79-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral2/memory/2908-189-0x0000000000400000-0x000000000048C000-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	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 4860	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	83
PID 2908 wrote to memory of 4860	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	83
PID 2908 wrote to memory of 4860	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	83
PID 2908 wrote to memory of 4448	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	85
PID 2908 wrote to memory of 4448	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	85
PID 2908 wrote to memory of 4448	2908	ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4860
- C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\ffb1758d5658f6b3158e3f547571f581_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4448

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\1ED9.D47

Filesize
1KB

MD5
4ce1617fb92be4536dc2393f46206fae

SHA1
6a6977024d97c3912a959a24703a80014421e2e0

SHA256
40c8766bef782ec63f183fc8eaff99cc12088f095047744a40226a042d4f906b

SHA512
6fefce7be3412cd8f9a458c88aa5f1d2d204c872fced9f7b25dddd4a7fe8398378064cf6235e1565e4d6a37dae29cf36f50e86e8d251dd1a3b9c9d6ad93129ac

Download Submit
C:\Users\Admin\AppData\Roaming\1ED9.D47

Filesize
600B

MD5
3e4d8a751fc94d08e0b3e653bfd13ef5

SHA1
159baeee833b201414e925c5f13dd222036dbd9d

SHA256
9034c76a2dd08037b633de4479dd564c3887addb99dab1b4a88107161ccbe5e8

SHA512
cb671fe403ad4b962376e28c6529199cdf3fe20a8f23c73ff62bbecfd26bad8e7dd7a0f43b836f12f7f71f0f1a58f9127314c2b3d1d607d353ae457e7a92e9e7

Download Submit
C:\Users\Admin\AppData\Roaming\1ED9.D47

Filesize
996B

MD5
337d9b997c9378ee239c5ade64f6f032

SHA1
0eff3a67844f58a6b97a678382b8cb44beb3e7f8

SHA256
f260540117549091c67b7bd85121fefecb31ad87e00c3a7f465644122c8bcc0f

SHA512
9140979da1f05a1e58578546968280b0cd0b9d55989d2b2e7baa2a2039cb918d3f27c96d645161a173fad08d7423f7540a160153c47e0d3bb5a1bac9143c196e

Download Submit
memory/2908-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2908-2-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2908-189-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2908-14-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2908-75-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/4448-79-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/4448-77-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/4448-78-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/4860-13-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/4860-12-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads