cycbot | 2a4f139ae32411cde4e425548e11e4a46776d293e20d00419294d1c01b99660e

General

Target

JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe
Size

164KB
MD5

4a2382be6137670d049e1832d46270ce
SHA1

3d9d2e8d8fe8c3e34e3cddb30041f23accc51957
SHA256

2a4f139ae32411cde4e425548e11e4a46776d293e20d00419294d1c01b99660e
SHA512

84b34fd76511889b218762fce24f62c6e889f48847c43098482dcb13bf47e26db89eaf1f6b82620d74fbcc9073ca813582e6d77ce8d3f12986ef09754996388e
SSDEEP

3072:3EGqYpw1b88tkrBTdCi387r4msKitgYCh+LuBwwolI56:3y1w8tQCGCr4m7H+DI5

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2420-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2420-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2336-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2336-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2084-133-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2336-134-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2336-288-0x0000000000400000-0x0000000000490000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\E908B\\B0E53.exe"	JaffaCakes118_4a2382be6137670d049e1832d46270ce.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2336-3-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2420-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2420-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2420-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2336-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2336-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2084-133-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2084-131-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2336-134-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2336-288-0x0000000000400000-0x0000000000490000-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_4a2382be6137670d049e1832d46270ce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2420	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	31
PID 2336 wrote to memory of 2420	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	31
PID 2336 wrote to memory of 2420	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	31
PID 2336 wrote to memory of 2420	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	31
PID 2336 wrote to memory of 2084	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	33
PID 2336 wrote to memory of 2084	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	33
PID 2336 wrote to memory of 2084	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	33
PID 2336 wrote to memory of 2084	2336	JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe startC:\Program Files (x86)\LP\536E\A95.exe%C:\Program Files (x86)\LP\536E
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a2382be6137670d049e1832d46270ce.exe startC:\Program Files (x86)\8BDF3\lvvm.exe%C:\Program Files (x86)\8BDF3
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2084

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\E908B\BDF3.908

Filesize
996B

MD5
f5bc2656e35e00d1bb83626a2aecb136

SHA1
b758dacd93f69dafa8f5bab199dbfe876b102659

SHA256
301ff811d032897ec4cd34716aba67e4e732e42ad2a8ecb899d2b681f3744263

SHA512
adb7876de8e475b44f6870198058d71cd95fe3c6764ffbd8b806813cdbdb02260560b1681a2f15c1dc0dabbcb828fa10cc78e6070f898830881551815d3479cb

Download Submit
C:\Users\Admin\AppData\Roaming\E908B\BDF3.908

Filesize
600B

MD5
2a39795d19da3aba785c63ac95ad452f

SHA1
bf20a97b544346e2b7f81f440b0ac4b290effc78

SHA256
9fd8cab7eb13b08dfca103ecaa1da0935193bb254e98d4745f97024bc1b5e926

SHA512
7cb385e8e7e7c96ab215300759020bbe95cf8174baeb9a308ac7a8904aa9106791fffbd76fc71f92f926cc1b4f8941ee3252639485492789f975a6744710812b

Download Submit
C:\Users\Admin\AppData\Roaming\E908B\BDF3.908

Filesize
1KB

MD5
46bbad2032697a6a2c87ceaa1d1aaaf4

SHA1
2c349acf7c20f09316e56092d5d81ab53d10bf52

SHA256
b1d627278918b905b65faa43b3e0b1d47c77d2fbf3632ad5baada2de9e254181

SHA512
797b5a036a144786f8faaf79a3470fd90b64dd70a6d16afbcd4a5615958f7a2e0feab161d389ac973e52649c9f301fbff4c60a25206b435a40efc89fed82372b

Download Submit
memory/2084-131-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2084-133-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2084-130-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2336-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2336-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2336-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2336-134-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2336-3-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2336-288-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2420-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2420-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2420-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads