cycbot | ca6661df5965e0412f57c2609b258dbfa3d6070b13742bbee23f0da3e96c1f08

General

Target

e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
Size

225KB
MD5

e39f84c4738f5e8a1cdf4cbe25e55289
SHA1

a0d07204a406452f664b9894a55c963af03dbbf2
SHA256

ca6661df5965e0412f57c2609b258dbfa3d6070b13742bbee23f0da3e96c1f08
SHA512

ff706c840ba0e72e283f6a460ab74191d83b807e0390dbcdd452e77fd2dea5056eede2459f39fa7839d00aa3b90e70b1bc0df83001af441bcc16c7796d31aaa5
SSDEEP

6144:9eujFBvOJcyDM2FkANE3QE0huQUnggHTQ4mhmCLv3/G4+6:9eujvOJcylFkANE3QnY5gC846mCLv/O

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/2700-7-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2996-15-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2068-88-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2996-89-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2996-194-0x0000000000400000-0x000000000048A000-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"	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.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/2996-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2700-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2700-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2996-15-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2700-83-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2068-86-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2068-88-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2996-89-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2996-194-0x0000000000400000-0x000000000048A000-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	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2700	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2700	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2700	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2700	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	30
PID 2996 wrote to memory of 2068	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2068	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2068	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	32
PID 2996 wrote to memory of 2068	2996	e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e39f84c4738f5e8a1cdf4cbe25e55289_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\60BD.2FE

Filesize
1KB

MD5
778e1570d12d42e74dc8ae1f5f5c1bba

SHA1
36dd2a9b4e3681764dd03899772fd6824949631a

SHA256
467c36e27c2a0c7be0ca14ae58daf83f4e2277066958112dd91b52dd971a0883

SHA512
bd45f0243e42ee0b196a92844f13143fb94880dccf775a58e1d82cddff9a6700a31f6b9c823a6e4f01f5ed05693a3edb5e0dc6b5d30311358e8a71feeccb8431

Download Submit
C:\Users\Admin\AppData\Roaming\60BD.2FE

Filesize
600B

MD5
38d06faf9b1cd00ce4fafee88ddc884c

SHA1
c3906f91de0eacf9e487ec9a6828f2dde76dd929

SHA256
f0518ac25819638058bfe623859136f1a6e6abaa47f4f34e0624a71e4ef36cbe

SHA512
b1f08337cb1f4ff01451d96113d4ad6f5c9176883ec6ca8052a689a5ef49aee5f82ddd36f43a60247238c3ff06b102d570d47303ece0cb1da8ea166dc170840b

Download Submit
C:\Users\Admin\AppData\Roaming\60BD.2FE

Filesize
996B

MD5
294569678add6ee3b4d6fb4d6161fd87

SHA1
477f50ff845240be3ce1551db69cfd6a958f5c41

SHA256
12cfe17ea45b1c7a8a02003b49be8057753d04a228b3b73586e6a961010fa3af

SHA512
20ff30cb0305b2558d90031dc403e53a86e2461006d5aeb0687e96d6569df5080383c690e507bfde8d5119b1b00e348223e5ca3b22f51be7ad08321e195f2fa0

Download Submit
memory/2068-86-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2068-85-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2068-88-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-83-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2700-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2996-15-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2996-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2996-89-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2996-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2996-194-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads