cycbot | 2262245b3a6625161f7ac8183ebb65d0b1e96617ba962c63b28dc256d4c65602

General

Target

JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
Size

168KB
MD5

a6d5cb621e1b5788e3b63881f1c9a7ae
SHA1

1432dd32c1438fd0ef27dd6a4d6300d416010495
SHA256

2262245b3a6625161f7ac8183ebb65d0b1e96617ba962c63b28dc256d4c65602
SHA512

520a7c6f1736bc2c7f744604eeec96e8c9782ed403ec5c0783a7c20a3d8e502c3102d64841bb031b2237c02f0cda884a3edce3fff7a55b30084d741c50c6e6ea
SSDEEP

3072:3z5WHsOQ8adZ2CVgULqn1CxBCHN06Hjo0r7HMkVj9fTsOO/:8MOteIeq1Cx2tjZ7HDj9ZO/

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer 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
behavioral1/memory/3052-12-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2520-13-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1116-139-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2520-140-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2520-302-0x0000000000400000-0x0000000000490000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\17EFD\\8D33C.exe"	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3052-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2520-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1116-139-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2520-140-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2520-302-0x0000000000400000-0x0000000000490000-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	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 3052	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	31
PID 2520 wrote to memory of 3052	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	31
PID 2520 wrote to memory of 3052	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	31
PID 2520 wrote to memory of 3052	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	31
PID 2520 wrote to memory of 1116	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	33
PID 2520 wrote to memory of 1116	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	33
PID 2520 wrote to memory of 1116	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	33
PID 2520 wrote to memory of 1116	2520	JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe startC:\Program Files (x86)\LP\3CD1\A92.exe%C:\Program Files (x86)\LP\3CD1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a6d5cb621e1b5788e3b63881f1c9a7ae.exe startC:\Program Files (x86)\FD83D\lvvm.exe%C:\Program Files (x86)\FD83D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1116

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\17EFD\D83D.7EF

Filesize
996B

MD5
eaaf84b816ceb6e82f023b8fbe8bcdb3

SHA1
3acf908fdc159af2654c8a6a23c720299c4e40b3

SHA256
d2b6e6ac2e8e525a9581b7674cb170806b70df19c9a9e126b6afbad0f0a1af28

SHA512
20227f35a1ce962b39dbea1bbe01cf469586623b3fdeffe1d7c262998517400520c7133e3747cb1aac86633f635c0bdc511e7c71d0d1032e68177040f2cbe942

Download Submit
C:\Users\Admin\AppData\Roaming\17EFD\D83D.7EF

Filesize
1KB

MD5
aa261a0580d0702cd3d1afcfaa617361

SHA1
ec072001e014b2dbfae44fc4b8374ed43625e477

SHA256
7f85d916d149039f02b9b5fd64df5e9086233f7b8c9dde0d5e3d6bfd70648657

SHA512
25ebf992707ffa68f8b7eb6411651bd52369e0afc528794ee047f6c58d2bf59256533fd2ebdf0b9c74bcc57bbd10a03406bf6c1f8de239bbbc9f35af8a00177e

Download Submit
C:\Users\Admin\AppData\Roaming\17EFD\D83D.7EF

Filesize
600B

MD5
51e5fe12ac574960867d9cc2ef64088c

SHA1
e59daabbcc8c44e5af6e8eb3ba25bcbd4e2ea61e

SHA256
317a5e8e7aa6029428a81671276ecf5f34907afdf31dd6855a728220f623a7ec

SHA512
00344bc9e432da56ccbd56e7c804a08060b1a6e46eba211b33b6e123d00b2549165574bb2d5ef609e4c3b6a44a14e1b8dcf59a23b38f0222275f742badd55bce

Download Submit
memory/1116-139-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2520-0-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2520-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2520-140-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2520-302-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3052-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads