cycbot | aadd504867c760b535ce8a059d362e7eca1b1b2279028fa38fa7d46cc09572d5

General

Target

JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe
Size

186KB
MD5

7a0135fc9e808808e0af37f0fff5f6e8
SHA1

66e316ae6326ffbbe4a0a8c6a023bacb0d1c3b19
SHA256

aadd504867c760b535ce8a059d362e7eca1b1b2279028fa38fa7d46cc09572d5
SHA512

021388669bff96f7d5a40910c0e1c5a623146c600dc6fe575f773c47db0997ba2b1706d24414407e277636c643e76218b0af42ed00d99e127652971bd35e393f
SSDEEP

3072:O4N+lN+8PBSteyH+YBNenl1g4//jPyNyif35eRPKO2hfJikg2sV7HEsPO5Ki/FM+:O4N+bRoBEl1B/Lif35eRV8fJiysV7jO9

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/2152-6-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2440-13-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/1788-72-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2440-73-0x0000000000400000-0x000000000046B000-memory.dmp	family_cycbot
behavioral1/memory/2440-170-0x0000000000400000-0x000000000046B000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.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/2440-2-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2152-5-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2152-6-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2440-13-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1788-71-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/1788-72-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2440-73-0x0000000000400000-0x000000000046B000-memory.dmp	upx
behavioral1/memory/2440-170-0x0000000000400000-0x000000000046B000-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_7a0135fc9e808808e0af37f0fff5f6e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2152	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	30
PID 2440 wrote to memory of 2152	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	30
PID 2440 wrote to memory of 2152	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	30
PID 2440 wrote to memory of 2152	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	30
PID 2440 wrote to memory of 1788	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	32
PID 2440 wrote to memory of 1788	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	32
PID 2440 wrote to memory of 1788	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	32
PID 2440 wrote to memory of 1788	2440	JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2152
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a0135fc9e808808e0af37f0fff5f6e8.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1788

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\F9F4.398

Filesize
1KB

MD5
75ba84987717b9fe558cdc7fd61e5e4d

SHA1
415c73de5f8e996e8958c8f8a27653b7eb380a2e

SHA256
798f2158347fa70f029cd4f577b7f243480df573fe4e8e6017e7b54a008ab14e

SHA512
cd041e8041f50916278551b00759b000061130f14cab7a3d268b11996d82255701ef6044435d7944375a8ba89e7798bd6b2fb99997dfd8d8dfc020a6c9c7167e

Download Submit
C:\Users\Admin\AppData\Roaming\F9F4.398

Filesize
600B

MD5
39001a216a4873f23911b3c701f72f14

SHA1
e532089b7e86c1ad54c9a2ab2c50b8fe653a3c8d

SHA256
226587ed887a5112de5896dfff46e442af54b0426a45cc04086fc7606b66d0a4

SHA512
da3ec96c805b77b71bb45c353145f7b4ff87723f3cc14127663de26ba432501f66558256886d5a68df1e62d1425e183be7897ba5b3b7e7d0ad485e47e2eeedc7

Download Submit
C:\Users\Admin\AppData\Roaming\F9F4.398

Filesize
996B

MD5
79c9fee50767bb175cbb61a68345020c

SHA1
f8945117836b9ff6f3553fda43651bd24ae5fed0

SHA256
89a54a8b5654d3a7a211cb80065c98c2b0045a0200f636982741cca99c5ccff1

SHA512
db1beed6a8559eba09fb8770bf9651845a509cdca5f3f30648995f513c5e8fefb77ae63f2b39f0d6ca82664c9ae0de21aa7b8ae151c4cb5c762866875463e59c

Download Submit
memory/1788-71-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1788-72-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2152-5-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2152-6-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2440-1-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2440-2-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2440-13-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2440-73-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2440-170-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads