cycbot | c6f79560d75fa7e7aed3dc0ed4a409b2da1079801f3c825b3537d993652a3845

General

Target

e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Size

176KB
MD5

e3563b8f44d31ee37795092a84a4528e
SHA1

aeea6518b9129f6c25a98a5932eb36a257286feb
SHA256

c6f79560d75fa7e7aed3dc0ed4a409b2da1079801f3c825b3537d993652a3845
SHA512

1fea4eb86b76317f6dcf22e01c22eb197b569dbcf823e16de5b70446453da511bb47639bdb97a87beb44889fd381ffaba8422847fbd93e08d642b66b9848336e
SSDEEP

3072:PZsEiz8LfmCmKSkPcJjmQk3yt+IymbuAB2RKwRB/pjWwbeSG:PZsE+K7cJjXk3ypyxezGB/pSwbeS

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/3300-18-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4324-19-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4324-84-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/2588-89-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4324-209-0x0000000000400000-0x000000000046E000-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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4324-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3300-18-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4324-19-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4324-84-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2588-89-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2588-87-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4324-209-0x0000000000400000-0x000000000046E000-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	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3300	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	83
PID 4324 wrote to memory of 3300	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	83
PID 4324 wrote to memory of 3300	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	83
PID 4324 wrote to memory of 2588	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	85
PID 4324 wrote to memory of 2588	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	85
PID 4324 wrote to memory of 2588	4324	e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3300
- C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3563b8f44d31ee37795092a84a4528e_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2588

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\7529.91F

Filesize
597B

MD5
00bf6c8d8963c2be141b5fa17ab64708

SHA1
cba9bed853ba192db1c8d4d004e038001a9684ca

SHA256
294df7b1a0bb4c1e59e2eaeccce5bd49b9b03c3792ec2e5dedc29f9ea308cb1f

SHA512
b3d714f96b3007441bab78229b367dd24d40453104e8e1238dd32e7a6077eef648526cea5e30a1cb5b0c068ca649ffb6fe60ff3e292020895284024d68402b10

Download Submit
C:\Users\Admin\AppData\Roaming\7529.91F

Filesize
1KB

MD5
7ce25753a7120ea9efec00b074872426

SHA1
73627f38c15f4e87ddafbf3777a5c4217a24df59

SHA256
1ea235c02afeeb0730f830b45e804067f1dff3f864ce31e99c25c4832b08cb41

SHA512
93b0eca8c317cdb455b2970942948509e74c988c6dbfb70b6edcb63a745bce636bd5d108ade945404f5f06de4197fceb9706ec4384600fcae12d5a70a6a61e5c

Download Submit
C:\Users\Admin\AppData\Roaming\7529.91F

Filesize
897B

MD5
e0c1bfd56750b35857def5900ebeb8e3

SHA1
cf340dbd02bc869ea10a291a6ed9bfad0c5a31f5

SHA256
a579b410e5ca9f7b4376696ec79a84b3d6fcd920f2a11655e62b7e59c20b2f32

SHA512
0be855557b64b1a406bd3b5901fe094547bdf2d0865b96a052a4e09615bea0e242832ef8f996fefeac26a2bd9839432d44717cdd20e4f6b7254774d975389b09

Download Submit
C:\Users\Admin\AppData\Roaming\7529.91F

Filesize
1KB

MD5
af6468bfd7f0e6217da239c508994ed8

SHA1
5f0f2e515c812e21c1c5b14c46e9b6815bce09bf

SHA256
b314cdc9fee048df8165d62d37cca569f089d917ce7a53dbb97fad8c9b4476f5

SHA512
47557f8def4d02d56c03aa38a4579a0070af3a492d95c2deaf95295f3637e5d955a79cd4b90e430cd06b1080b210d4bac68d057cf5c2ab193c384374423ab414

Download Submit
memory/2588-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2588-87-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2588-89-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3300-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-84-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-19-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-209-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads