cycbot | b1d5250f9238e7a26eda172a27a5e8d783b2fbf992631a1c42be72a976ef5af3

General

Target

JaffaCakes118_48424d61bbe95463813d519028f55816.exe
Size

184KB
MD5

48424d61bbe95463813d519028f55816
SHA1

99b2cf21e7ad98dbee855347db5e88b04691e2f6
SHA256

b1d5250f9238e7a26eda172a27a5e8d783b2fbf992631a1c42be72a976ef5af3
SHA512

a64662c0617aae47358272a2b14a665ca16985f73253bb72efff7a10d40f0561061205b9786056a518f59d7d1252788c51c7746086f38d9242189a27ecb349d5
SSDEEP

3072:0f3ZM5kiCeDxS7txhF7BiOk+5cOWAuEJONr3lsT6O8vaUO/NwbX850pMIWqojEW:6pM5kuSJxhdBiOk+5cOvJOR46O8v5Zit

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/2776-9-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2280-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2280-81-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1220-84-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2280-199-0x0000000000400000-0x000000000046E000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_48424d61bbe95463813d519028f55816.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/2280-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2776-9-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2280-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2280-81-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1220-83-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1220-84-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2280-199-0x0000000000400000-0x000000000046E000-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_48424d61bbe95463813d519028f55816.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48424d61bbe95463813d519028f55816.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_48424d61bbe95463813d519028f55816.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2776	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	31
PID 2280 wrote to memory of 2776	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	31
PID 2280 wrote to memory of 2776	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	31
PID 2280 wrote to memory of 2776	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	31
PID 2280 wrote to memory of 1220	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	33
PID 2280 wrote to memory of 1220	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	33
PID 2280 wrote to memory of 1220	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	33
PID 2280 wrote to memory of 1220	2280	JaffaCakes118_48424d61bbe95463813d519028f55816.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_48424d61bbe95463813d519028f55816.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1220

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\ABF7.6A5

Filesize
600B

MD5
c7c5a62dc4d615097b3ed1d6fac1ba75

SHA1
4cddc0dadd8c22b7c5a1b1cfda44fb5a345ac218

SHA256
b4acb89c34b8f201bf405c7cc53e17acf10b6a603b37d9530ae4cb443c626992

SHA512
2006e3650b40aa734be6948c00ecbb2c83a58c5ef0cc588103028d61d3c49d836c8d13818d52498ff56ff0751cb935c2f7cc8eff28d974114c38c6cde7b5f46e

Download Submit
C:\Users\Admin\AppData\Roaming\ABF7.6A5

Filesize
1KB

MD5
e830a33d7c2bfa1f0412f491c906d091

SHA1
9738bb601d33dc3471a6d1b8bb765d28eac6f4e7

SHA256
ab40d4e5378e71295d964c3e93467c22a5e2c6b4fc716378a79b3a48b910cb92

SHA512
081b0f1074a587bbadad4534ac6e34b0e2f565da1ce34a6e60759dc647a936ea03008c34bf264a7ec56484216aa603230a39d0743e5dc88037c3f832d4c6661e

Download Submit
C:\Users\Admin\AppData\Roaming\ABF7.6A5

Filesize
996B

MD5
16acd03374f8873e5cbcc505ad617d00

SHA1
7a25e2ae29881b84807ccd131cc4704e9f988c01

SHA256
1ef9bd120268a64077771a9caea61c838b8e8c6c0205f0912d3820a90f57e209

SHA512
c65180bddf6549cf6bbf9bade0065d386fd6c74386dbc0d449660d875e459248b65d539d8e514e66087f6ab833c0cd22c7dbeaf703478cdfc7653c15830bae52

Download Submit
memory/1220-83-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1220-84-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2280-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2280-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2280-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2280-81-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2280-199-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2776-9-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads