cycbot | 1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664

General

Target

e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
Size

173KB
MD5

e74886b56828724381864cbd4a02d970
SHA1

b7c867ec52da12c73047b7e6ddbc43e92ca439df
SHA256

1a0e4e1a66c8074e7c5120134f24b6eb31af3c461aedcc09d6e46be661be5664
SHA512

2979afee4da2612fe8e1dc33f8e07326324b282e058ad1600a303dc1fc8802805424e64326c5ad6d48580da5121c00505078a4b608af8a7567241a604e2ee0ef
SSDEEP

3072:ct4uQ++kNoWKAjL5S+QNGS0CjBYP3TB4yHYMJwD28/HMZwF59Pi2:ctRFIAwjHX9YPiIY9SMEs

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/2492-7-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1668-15-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1668-74-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/2620-78-0x0000000000400000-0x000000000048A000-memory.dmp	family_cycbot
behavioral1/memory/1668-194-0x0000000000400000-0x000000000048A000-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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	e74886b56828724381864cbd4a02d970_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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1668-2-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2492-5-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2492-7-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1668-15-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1668-74-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2620-78-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/2620-77-0x0000000000400000-0x000000000048A000-memory.dmp	upx
behavioral1/memory/1668-194-0x0000000000400000-0x000000000048A000-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	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 2492	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2492	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2492	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2492	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2620	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2620	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2620	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	33
PID 1668 wrote to memory of 2620	1668	e74886b56828724381864cbd4a02d970_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e74886b56828724381864cbd4a02d970_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2620

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\DD2D.354

Filesize
300B

MD5
877c35e326e1cc8e4e3ca0672079cf15

SHA1
da88569f4f87a181b0bb5813d6f90cda87d751ff

SHA256
5288c17b2cafc80f7ecc6b3ef932434f5f8e87307e617d9227b1f6cf2f136ede

SHA512
f8aba412b98b1e13e610db70b83889c5f758e2df5ac23a86370e3f54b27c1f96cc56fd0c1706fc0e4f2dc60e48622afc5706536b6e28bc40ce233f96a1a69d56

Download Submit
C:\Users\Admin\AppData\Roaming\DD2D.354

Filesize
1KB

MD5
8044d48b0decee255f69a49e42f5f1c6

SHA1
ff2ea26356faff001936f841d2434f17eceb30dc

SHA256
a8ff11a3d97072ede8263f8c8f5d6c6ff0cb02415d36f00cc7d2241dac2e4677

SHA512
cb15d7c3682061649e60016ff50037af5a096be54fb7a8464b2f396aa552f0a10987435331bf64df79658a14830b6be89e6303cd55262461a7032a4dd818cd96

Download Submit
C:\Users\Admin\AppData\Roaming\DD2D.354

Filesize
600B

MD5
34c2b4a35963431f359a0eb2da312cff

SHA1
ac99ed8f2701d881c49821d4b7d478e64b3627f5

SHA256
c6230185801dc9b5f512449a54d51b1f3dccb3fc0901e6647d088dfce460dd28

SHA512
df6d7a02a10d4f017b4b49096b649e62ceb951ea0192e55a59878a2c7d1e9cd5b612eb84c5fecf3ee7739e477b85aa71eb09553c302db1fb99ca171ee3840d8c

Download Submit
C:\Users\Admin\AppData\Roaming\DD2D.354

Filesize
996B

MD5
23213e7cd619de9991548cd872484e5d

SHA1
2939a31f56cd5deb607d1e6991047ba5f7faf30c

SHA256
3193b8e432ffff49df9d694ea3706837bbe9e658e15f7daddcc7eccff4f473b6

SHA512
4767bbf53ad0a2c7b93808c5d92a95b2f7e872dbe7c2af7e96e15cb5b74e036aab1fa83480d95d66b3c2e2022ecb174d777f889b91a10cffb0574155dc76d4c5

Download Submit
memory/1668-2-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1668-194-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1668-1-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1668-15-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/1668-74-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2492-7-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2492-5-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2620-77-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download
memory/2620-78-0x0000000000400000-0x000000000048A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads