cycbot | aa6a148220ba43ed6c86f81eabd09c864d47f0392e12c0440f3205caef80a3d5

General

Target

JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
Size

178KB
MD5

685a16e5561b8a0e821c19869fbda726
SHA1

31d91ac30b93bbbd272d7f437f07e9e127b78ef8
SHA256

aa6a148220ba43ed6c86f81eabd09c864d47f0392e12c0440f3205caef80a3d5
SHA512

c15542aa4a63ae3c5e906ef312f9ed873cc0acb0b5ebb3e30c9045e752b0de0adeb51c2fb9e466dbb88ec7565bfda69ce4d1d13f1ce54dab4632f4415e4dd715
SSDEEP

3072:EQBVyS6IvAFI+KEpHxbupiw/CPNfPA01GNaP0GXLrsv5c5IY81fpPXkxLF2ukO5I:EWywv81dupieEA01C2Xsve5IY81fpPq9

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 8 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2768-16-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2032-21-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1044-97-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1044-95-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2768-94-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2032-92-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1044-98-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2032-213-0x0000000000400000-0x000000000046E000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.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 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2032-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2768-16-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2768-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2768-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2032-21-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1044-97-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1044-95-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2768-94-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2032-92-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1044-98-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2032-213-0x0000000000400000-0x000000000046E000-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	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2768	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	30
PID 2032 wrote to memory of 2768	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	30
PID 2032 wrote to memory of 2768	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	30
PID 2032 wrote to memory of 2768	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	30
PID 2032 wrote to memory of 1044	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	33
PID 2032 wrote to memory of 1044	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	33
PID 2032 wrote to memory of 1044	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	33
PID 2032 wrote to memory of 1044	2032	JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_685a16e5561b8a0e821c19869fbda726.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1044

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\6CF0.2DA

Filesize
597B

MD5
eff6fb39cc2933f1a93d2205513cd041

SHA1
f72ccb589ffd964f2ce574a1ee02493c0df4ac2a

SHA256
bf9e470e8885b5af348a276e5d09783ea6dd636aab326b97cded04e0ba945f25

SHA512
c39103faf76aed245b3cfd17f7640ab3fa8c55849d730e8f0f6415485aab6adf53b0b40f5c975fcb3b66e25cef6e276bdb44dc394252b9910534bfcf4afc095b

Download Submit
C:\Users\Admin\AppData\Roaming\6CF0.2DA

Filesize
1KB

MD5
02fb810d2a08155044a956ef6fd14fe8

SHA1
73ac4b224f92f6884ed310042da8988bd7793fc6

SHA256
20bb72ac8beb39657ea7de209de9ef7b6bc83d6c88b5cb606d39573f6e01b43f

SHA512
7447972cb4789aabc5be4ccbece509e9484970fc8d6e46c10cf2c0a2c4ce4be0a241bd05a30ac9fb56aa36e0e7a1a6ec82988cee0d4f1a878b62cf76a9374d39

Download Submit
C:\Users\Admin\AppData\Roaming\6CF0.2DA

Filesize
1KB

MD5
4095a55d56cb76c511a5c51650aba8d4

SHA1
69c17fb60c1f173e0545d5ff2e434212cd26182c

SHA256
051dc615b5854a5f7b3230c461d6ea3bd641119d7ab31634ab58836f88093c12

SHA512
fe71aa27fb0f4991657de2c5d529a2ecec8c5a70a9091a86b28131618809930dbc79598c0a470289c71aaae8937f967074ebf4c20a89fed62234b48368e5b619

Download Submit
C:\Users\Admin\AppData\Roaming\6CF0.2DA

Filesize
897B

MD5
1e2cbc210ff56d121d72807d83ca7b85

SHA1
3837b40ab3b9e11e296b7d0c7d66a8126352ebbc

SHA256
e01a78a27d7efe3f51d42cc86340693309fcb7bbf47a44607d882f4ae16883fb

SHA512
01dc40a5308d85b52bfb6d0673e221b214d4c995d3db03b078916edbea046c4026716c280c3e8c008644cecc4deabb3df5e8c91a7035c16bdfe71722a1259906

Download Submit
memory/1044-96-0x00000000008F9000-0x0000000000915000-memory.dmp

Filesize
112KB

Download
memory/1044-98-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1044-93-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/1044-95-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1044-97-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2032-92-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2032-21-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2032-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2032-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2032-213-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2768-94-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2768-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2768-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2768-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads