cycbot | 906c5db5b81bb5b112ed6f3ef2d3181bb4869e82e4e3a40b775e5ecaed3264ed

General

Target

JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe
Size

173KB
MD5

3554b0cd570e8d29242b9cc31bb66fab
SHA1

f137a863bd7309896c243aa9a8a06bc70f5579d6
SHA256

906c5db5b81bb5b112ed6f3ef2d3181bb4869e82e4e3a40b775e5ecaed3264ed
SHA512

62a0e10a8df1ff48292630a04cc03105fa29fdcb6a7321d61cac911b7d2fab6554d2fabdce53f67583270264689d0499fd11b1721ae0eb1ee435508f8efcfa8a
SSDEEP

3072:02EXXq0sLf5/tUj8JxMHXKbMmQppXuNR7D0+HIldhkeFVFuf2jbU7xowAM:0j6prqQj2eN1jHIhkqW2UlD

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/2380-13-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2568-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2568-15-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/3016-135-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2568-136-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2568-330-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2568-331-0x0000000000400000-0x0000000000491000-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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\B3338\\73180.exe"	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.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/2568-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2380-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2568-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2568-15-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/3016-133-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/3016-135-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2568-136-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2568-330-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2568-331-0x0000000000400000-0x0000000000491000-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_3554b0cd570e8d29242b9cc31bb66fab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2380	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	30
PID 2568 wrote to memory of 2380	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	30
PID 2568 wrote to memory of 2380	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	30
PID 2568 wrote to memory of 2380	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	30
PID 2568 wrote to memory of 3016	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	32
PID 2568 wrote to memory of 3016	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	32
PID 2568 wrote to memory of 3016	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	32
PID 2568 wrote to memory of 3016	2568	JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe startC:\Program Files (x86)\LP\809B\F7B.exe%C:\Program Files (x86)\LP\809B
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3554b0cd570e8d29242b9cc31bb66fab.exe startC:\Program Files (x86)\382C6\lvvm.exe%C:\Program Files (x86)\382C6
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3016

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

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Downloads

C:\Users\Admin\AppData\Roaming\B3338\82C6.333

Filesize
996B

MD5
81c25f548b18fbc8ebbc7e3b867b9eb4

SHA1
8ce731a59ebc11b648dae90acf1108681e219aad

SHA256
dfcbf06f5bf1fd685d9e7a0c5014e27f520da19e90c6fc4615b3145777b073c7

SHA512
1a1539d20e1987286b8136adb9fc907104a23848bcf53a75a0c2313169feb345eb24428b024a254cc83316037856cfd75026b9b9fef6e389742b77627100e15c

Download Submit
C:\Users\Admin\AppData\Roaming\B3338\82C6.333

Filesize
1KB

MD5
9450a329cfe36d1fdc8209116b58337d

SHA1
74a5eb404ceca36a8098ad948425b54bdbdd9d2c

SHA256
73cafb9fc03bba9ef28dfc6691000aef10191fdd8bf29aa8a650cf71bd7417c4

SHA512
3088d57845d48c4671d26381f6d1eaeb667ec44b1d531e472d8cc38adb87a27a00fcf14e514e937cd40b54fa612acd7b1e8c2a571e9402d8509edb4449a58ece

Download Submit
C:\Users\Admin\AppData\Roaming\B3338\82C6.333

Filesize
600B

MD5
c7569081cdc365697654e0bc726da742

SHA1
268085cb3476b83225f6d84531c7aed3c5482759

SHA256
a22a6e494e88caeba7781e469f4304eeec3f29af23c4dd172103da1a2a8262a1

SHA512
5f33826dddb0c540ea8a00f8c07b695150acb56e6acc64e0cd54a9a9630fb026249b031cefda8b481be016c6a6906c8ec5e1e8cd1654d22d77177ccc203d0826

Download Submit
memory/2380-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2568-136-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2568-15-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2568-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2568-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2568-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2568-330-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2568-331-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3016-132-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3016-133-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3016-135-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads