cycbot | ca64ef74f5424656bc57a9131651785a69001634d0af0b1280c9101be48fcae5

General

Target

cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe
Size

184KB
MD5

cd1f60e33e97cfd8666442bbb73d61d6
SHA1

ef28dc487c4664fd5cc71bbbba2bd2d2af3ec991
SHA256

ca64ef74f5424656bc57a9131651785a69001634d0af0b1280c9101be48fcae5
SHA512

74ee00cf1026061c9bd9d1e8f6c21f6ceb626a80efcb73773b004376a8ffa3571e3dbed77c6af2f430ff8ffbcf084438a2cdabb4fd1465d8ac3fca0dcd38cc66
SSDEEP

3072:ZCo+5CqpKED6/yn+fz4d1urm7t0Mzkwt5ySg3hnPUJMEFwsrwQ3nqIKqKzEc2XP:Za3pX/+fzYEr2t3zkwtgJxIz9r3nqIKh

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/2212-9-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4376-14-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4376-88-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3956-91-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4376-190-0x0000000000400000-0x000000000048E000-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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4376-2-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2212-8-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2212-9-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4376-14-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4376-88-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3956-91-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4376-190-0x0000000000400000-0x000000000048E000-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	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 2212	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	83
PID 4376 wrote to memory of 2212	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	83
PID 4376 wrote to memory of 2212	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	83
PID 4376 wrote to memory of 3956	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	93
PID 4376 wrote to memory of 3956	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	93
PID 4376 wrote to memory of 3956	4376	cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2212
- C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cd1f60e33e97cfd8666442bbb73d61d6_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:3956

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\2B29.922

Filesize
600B

MD5
5f05005f503a5fc1ab0fa68ccdf53d17

SHA1
17d23c8dd31138ff82872139c403da5023a43521

SHA256
6d308b37377e51ec63a798ac17f487fae3168f5ae93e421d20ec90a0131dee86

SHA512
628d5032d9ce2fd5532e0d8adc354d0a93cbfcde56b5bedf26365699a775a85accfc1d46200fe299814992490cd332f5b4fd39bc2032ab814faa0b91fcd5cc6d

Download Submit
C:\Users\Admin\AppData\Roaming\2B29.922

Filesize
1KB

MD5
972f6ee256c94dfdf73137c8e8564b5e

SHA1
c613b08594421d36dc6e859f3318801b53cc1211

SHA256
fc35e7c2b1ae316b94fcb6bdcfff8a9add7474f8d5a1a1287ab55d191901c35f

SHA512
95ce3f45dbeb08c4fc9acf95ae9b058f5136880bacb812053a1027f409c7de311cd2c8cc0c2d0fdf1860cf5f818856f53199e0dbb6e2c0ff5b7ecedb1e176b08

Download Submit
C:\Users\Admin\AppData\Roaming\2B29.922

Filesize
996B

MD5
b54626bfad6289a700c51809603af80d

SHA1
ee2cbbb0424f45ea6e5fd831dec760ea798f23b5

SHA256
09f9860e64c9161096076f3b2052c0b82b6fdebef18f17bfee577addb9f32ec4

SHA512
453df8a3108dab207603f21c1aaf76a7c90c1815c369a32bee5e528991846e2ebc4b3a57aa374ea9034972df5fff1bfa9d91d6bc4c64baab14d9084b6cfab6df

Download Submit
memory/2212-8-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2212-9-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/3956-91-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4376-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4376-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4376-14-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4376-88-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4376-190-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads