cycbot | 9baebc11c5c3ff4bea6c06428e02127aac6d25b113a8392d51c379b2b8ce280e

General

Target

a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
Size

176KB
MD5

a22cb5adac759fff16b4d45fd78a8dcf
SHA1

08be30429659661bdc8967218071956ef54131f8
SHA256

9baebc11c5c3ff4bea6c06428e02127aac6d25b113a8392d51c379b2b8ce280e
SHA512

4df2913a5c7f4ea0f15111139070935e8c4a9f6646b6facfe38e60efe3cd9330d4b201dd33b73288a4356edb03fb4d8d5d9ae22f474bb169ca6dffc750bf4756
SSDEEP

3072:5vboWPZhFnG8hDZcbi4zN8CF6BaFXVV75HeW84MeHkF:FblFG8hDZR4zN8C26lL14

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/3592-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/3924-20-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/3924-85-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/996-88-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/3924-188-0x0000000000400000-0x000000000046E000-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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3924-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3592-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3592-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3924-20-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3924-85-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/996-88-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3924-188-0x0000000000400000-0x000000000046E000-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	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 3592	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	82
PID 3924 wrote to memory of 3592	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	82
PID 3924 wrote to memory of 3592	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	82
PID 3924 wrote to memory of 996	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	90
PID 3924 wrote to memory of 996	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	90
PID 3924 wrote to memory of 996	3924	a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3592
- C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\a22cb5adac759fff16b4d45fd78a8dcf_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:996

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\B25F.BD2

Filesize
597B

MD5
c7d0e86968038d13d920ae65781e6d17

SHA1
9ffbf9c54c9ea40f66eaafad17aff116c8ddc89f

SHA256
51317922370a78d95f8ff67ed69f0e57b65c250f7f26e660d830e448cf93ce0e

SHA512
9e8146931eaa9cb9c5c60c4f768789155a8a09f43383acd02b7d2647bdd108d235510d43f6a1c4dd987e6c64cd283e59fa36c409fcd78633186f87ce24316c2a

Download Submit
C:\Users\Admin\AppData\Roaming\B25F.BD2

Filesize
1KB

MD5
f421959b2b866090ca95ff2497a6d353

SHA1
bbf2a93d276b19d2dc24f36416abd219f93e577c

SHA256
fc54262112af70f7882fb8180bb7693695a41eb7b5b471d4fe4de9de81ab1c30

SHA512
daae05414c1ec48bf1df1b70098d060ead7d11e0a5ce302c58f64f1f9e24d4e607bc4b670a16b2eb2a22a9a02cef8671f4d3f7615e44652d64577e7aa0a04a6d

Download Submit
C:\Users\Admin\AppData\Roaming\B25F.BD2

Filesize
897B

MD5
9aa323b6244d1b3c6bf3b5971572fb79

SHA1
aeb94b806469a169e30b300cb757a54b39b8b9d8

SHA256
6741e48968f4d7ce4f510f3cb0af0bcf874dd9efba53866c35dd5a412c8842dd

SHA512
a7c9e210ee3a4d0390b1c12ed91edea3c76414797535653ce2abd4bf4ead6cb33d58dc980cdd699151d75c822ee47331b317d3b252dea7755ef4006368fdcd5e

Download Submit
C:\Users\Admin\AppData\Roaming\B25F.BD2

Filesize
1KB

MD5
4d166eedb9ecd821ad9bdb2df04cbb2a

SHA1
b54f84840ff87536bdd272dc9e51b22eb6b154a1

SHA256
1f2ef950657edc430f4f129992d01423404b89ac853868238ba81af4a887714f

SHA512
97d5a9cf7787a2659b9d29425ba21b98a8414e8a2f4b29fab434787b2a35e344ff5ef862d3aa42cdecab40217aac5d6fe4bba2f8660bfd22a3b01b7c3d108f0c

Download Submit
memory/996-88-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/996-87-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3592-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3592-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3924-20-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3924-85-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3924-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3924-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3924-188-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads