cycbot | a2b0e82c6cc7f9c66f119f32b2fd402a68f0bfbdf34129709078fbae10cd14a2

General

Target

JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe
Size

165KB
MD5

59ef85b79a6382700ebdc1bbbf8f01c1
SHA1

1eb32ce8991b1067930ed13d7d9a8ebdb4ecc357
SHA256

a2b0e82c6cc7f9c66f119f32b2fd402a68f0bfbdf34129709078fbae10cd14a2
SHA512

32fcf67d50ca1beb4eb49939dd3c623226448996e33fd02b691cd720b40593dc24ecb6d4c8195752db22c91420e0f8fa74736fe670f50aad2bb167599c413d9e
SSDEEP

3072:5FlKQvSVSSSR6m1iNm9Euf2Vw+B0sSUvsvcBqamZDOwaDJmC:xq7S2aEuiRsvcbr

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2848-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2280-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2280-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1952-120-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2280-122-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2280-284-0x0000000000400000-0x0000000000491000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\62EC5\\6041A.exe"	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2280-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2848-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2848-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2280-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2280-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1952-120-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1952-121-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2280-122-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2280-284-0x0000000000400000-0x0000000000491000-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_59ef85b79a6382700ebdc1bbbf8f01c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2848	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	30
PID 2280 wrote to memory of 2848	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	30
PID 2280 wrote to memory of 2848	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	30
PID 2280 wrote to memory of 2848	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	30
PID 2280 wrote to memory of 1952	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	33
PID 2280 wrote to memory of 1952	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	33
PID 2280 wrote to memory of 1952	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	33
PID 2280 wrote to memory of 1952	2280	JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.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_59ef85b79a6382700ebdc1bbbf8f01c1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe startC:\Program Files (x86)\LP\1A96\AC3.exe%C:\Program Files (x86)\LP\1A96
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_59ef85b79a6382700ebdc1bbbf8f01c1.exe startC:\Program Files (x86)\C5D18\lvvm.exe%C:\Program Files (x86)\C5D18
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1952

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\62EC5\5D18.2EC

Filesize
600B

MD5
1170e3650842b966cf6b077857be3ec3

SHA1
6e4a7216a92337a6e5d7f8cdb93c2864fcd0f1cb

SHA256
d79801e27caf2e37681958b209611970d9b35f3f1a6826179f10c113494fb3a5

SHA512
1f55206f4ec47e8c87087f20e8f5e48c671300b8f2878fb0738d59762f4ada464917de7d7f9203db649a149922c35c1a82fec6ecbdd608d876b04c392e7cfe8f

Download Submit
C:\Users\Admin\AppData\Roaming\62EC5\5D18.2EC

Filesize
996B

MD5
0b1f4827a87a4309b461fc731ae70fdd

SHA1
15c6cbe7c469bd3750e02673cbd2e5d821326305

SHA256
551771e1730f77e5fc158b1d63b039b7c6389c439c3e6bb26b7b6358108c52ea

SHA512
b5829866a17edfe47a06eb8eca0a42929b0a60ed1375c09471b1bbc2b7e1f4cfef7a50b1b668b8c6b56beb5b73fadec8ba4535009e90bb675a168a02a74b0b7c

Download Submit
C:\Users\Admin\AppData\Roaming\62EC5\5D18.2EC

Filesize
1KB

MD5
8292aef63636528f389311a5daccb93d

SHA1
88612f3ef2fcc90b0adc2f95c5a65322dabf7ee8

SHA256
932430f94d311d0bb32bfe276d237d6ef0d25c07e7281e68f08c767d2ad04b18

SHA512
4a467ca5eb18895f8872af964b5f0774b314d1091b92a414a26911b5886adaef825c35390c11cff3c0e3efa3b0be2b4905228e84326b8bcc133aea87999e3265

Download Submit
memory/1952-121-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1952-120-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2280-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2280-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2280-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2280-122-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2280-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2280-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2280-284-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2848-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2848-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads