cycbot | b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44

General

Target

b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
Size

169KB
MD5

b6e91af58e0d4dcd60afe30adfdd0730
SHA1

73ba3ebd344cc3255e1127c248a6cfebd965cb43
SHA256

b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44
SHA512

84b5cacf9b54055c6195d2d0fb8d0dcc148326e79494a3d2128f8227ef676a513b63748901e423646ae67eaee9898964d5aaf4736225a86fdb54d1ff4fcb0bf2
SSDEEP

3072:pYtI3xw7+scZSKf9OnYqjbsYUdhV+ZF+Q0kx+p9s4lgUBS9Rh/duUk:pP3xeNcZSKf9yYosXdhTksp9IdE

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/4692-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2108-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/2108-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4940-84-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2108-144-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2108-186-0x0000000000400000-0x0000000000491000-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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\16C74\\5343D.exe"	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2108-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4692-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4692-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2108-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2108-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4940-85-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4940-84-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2108-144-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2108-186-0x0000000000400000-0x0000000000491000-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	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 4692	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	82
PID 2108 wrote to memory of 4692	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	82
PID 2108 wrote to memory of 4692	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	82
PID 2108 wrote to memory of 4940	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	83
PID 2108 wrote to memory of 4940	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	83
PID 2108 wrote to memory of 4940	2108	b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe	83

C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
"C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
  C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe startC:\Program Files (x86)\LP\E791\AAB.exe%C:\Program Files (x86)\LP\E791
  2⤵
  PID:4692
- C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe
  C:\Users\Admin\AppData\Local\Temp\b4961731a649665ccee47fa4e10b85355640e182b148460e47068f27ab220e44N.exe startC:\Program Files (x86)\746A6\lvvm.exe%C:\Program Files (x86)\746A6
  2⤵
  PID:4940

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\16C74\46A6.6C7

Filesize
1KB

MD5
9212ad2ad4bf8141de7f0cfedffa0e91

SHA1
1c146f9daf8b967ddc185b4c0dd47cfc8115fd5b

SHA256
cf953b6bbd18d1a515b0fac6d6be519860c134a7193112811a49161df61a2dc8

SHA512
f2949a25b3f35fc187f3802b28fd28672bcc580605050740645cc4648784e350d0f260118842c68fc1ea9fcb24c73ad196643de5017be61e1b3c8a15ac3deedc

Download Submit
C:\Users\Admin\AppData\Roaming\16C74\46A6.6C7

Filesize
600B

MD5
a278a0412116f072c6dd804193d88c6b

SHA1
f656cc93fca5fcff8cb0a40a4a595eabf7ea6e09

SHA256
be658e4418846059019620d436169e7a5d6108d1b6f8a60a42e3cbfb6ce2d841

SHA512
ccbc8fb0d25043e6fc6fa46c21601ca0292d470c1dc6af40ee3134b3fe22bc89448824f2f183acf830c1970474a38dfee44ef6188296c90c5954bc1b5650b677

Download Submit
C:\Users\Admin\AppData\Roaming\16C74\46A6.6C7

Filesize
996B

MD5
c32affa0d79de3549afbeb6a871aa9da

SHA1
8681fe6b24974affa04be5820e738fbe961d781c

SHA256
d8dc3048b4cc54ead0452d6851cba43501d2b35b84db2cc4c0fb54406fd7f207

SHA512
f0540920610831313cb3d1b2c0bedfd022e725873cb33404c37f06d51e687dd0d5d22ab091e67bddd102437b92b468a0a795eaa04180caeb6f6ff6f22f645a7d

Download Submit
memory/2108-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-186-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2108-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2108-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2108-144-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4692-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4692-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4692-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4940-84-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4940-85-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads