cycbot | cfe85bd1b45e2c88ff7fe9f0eaaaa332855ac57420a2e5407ae23ca3f375c534

General

Target

JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe
Size

201KB
MD5

48a82a96f04c08a6d97a128c65b6e334
SHA1

7fb1459224a9510db5fa5da1c23f940467be9602
SHA256

cfe85bd1b45e2c88ff7fe9f0eaaaa332855ac57420a2e5407ae23ca3f375c534
SHA512

847e08e01708d46d1d1d3f2ecc8885aa2d9662fe18ee7aa2871b436fe51d672ca4f0b5eadd931573a7d42a3b6f293a741065e022cfdbd8727a214f50b0999284
SSDEEP

6144:r6chrPR1SsXlg++3GOw57MJbUIToOiAev/a:r9r1SsXlHdb57MSMoF/a

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/2088-7-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2392-15-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2740-70-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2392-71-0x0000000000400000-0x000000000046D000-memory.dmp	family_cycbot
behavioral1/memory/2392-174-0x0000000000400000-0x000000000046D000-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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2392-2-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2088-5-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2088-7-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2392-15-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2740-70-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2392-71-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2392-174-0x0000000000400000-0x000000000046D000-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_48a82a96f04c08a6d97a128c65b6e334.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2088	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	30
PID 2392 wrote to memory of 2088	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	30
PID 2392 wrote to memory of 2088	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	30
PID 2392 wrote to memory of 2088	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	30
PID 2392 wrote to memory of 2740	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	33
PID 2392 wrote to memory of 2740	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	33
PID 2392 wrote to memory of 2740	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	33
PID 2392 wrote to memory of 2740	2392	JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48a82a96f04c08a6d97a128c65b6e334.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740

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\0A0F.74B

Filesize
1KB

MD5
132772f22db6f38f4e28188a79792f2b

SHA1
f35de7edc8572db7152151ff6e36838ef394e0d2

SHA256
589f0b1fdc29990b240ec0d49f46de08a3e3a4c112f95ed9c429227de7e74c6e

SHA512
355fe79567aaf1aabfd58858bbbc90ce0091b53aded3cb51516746c4d46978d8e571e184501f537eccef40961c96141393f066308045e815b523bb0f8dae4db7

Download Submit
C:\Users\Admin\AppData\Roaming\0A0F.74B

Filesize
600B

MD5
e9c4d71ff893c80d34f8a204f0e194b0

SHA1
8d8d29856e7e1952b440c9860085fbfd2369ea2d

SHA256
d82fd9b9f9d52632e9896e1ff526e2bde59a4797b0390411768356df641e07c4

SHA512
a153017438490493b21b014c40554640a8ca47fec2bcf48a753f9288cc12b79cd5c7a79343c9f95484b9cfc6a63654657b22a19ed470e9a318c785bf2dc11081

Download Submit
C:\Users\Admin\AppData\Roaming\0A0F.74B

Filesize
996B

MD5
d13b149553cd89cbaf06d8d5e85735db

SHA1
f2608455e5c7bc80dbbb153fcd3382e00acf3b57

SHA256
79296953905480512c15c1d4d102a9d79fda922d2bf68e4a5874d718796033ca

SHA512
c49a82f3f1ea0c802446a52f0d89f9a90eff846f9a1f8f88bb0e8d1b37b71f0788229ef7e767d90d8634864543e3dee0912431d0345258e5d740787ac8c518a4

Download Submit
memory/2088-5-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2088-7-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2392-1-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2392-2-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2392-15-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2392-71-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2392-174-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2740-70-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads