cycbot | 3cba8c269d792d81024d5f7f5102d6de548839d01e4f7bf5b346b32773cf317e

General

Target

JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe
Size

175KB
MD5

7b52ffae7f920b2562d5dd51c52bdcc1
SHA1

3ba49d344daf610ebbe908793316fae3c3b3a215
SHA256

3cba8c269d792d81024d5f7f5102d6de548839d01e4f7bf5b346b32773cf317e
SHA512

70805e6b8d564fe3eb96d666532b22e0711b2cfc911de255d13b42ca8dff729464d97059592e8ebc1c150120de0d8876aeee12717b862faed544a0b1047406a4
SSDEEP

3072:Oe1gpuU2nZCuoW/ZIZMiQLZN6BCalsJGLTeKMcUTW:OeBJZCu1/KZMvLXCfsiTkcUTW

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/2732-14-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2936-15-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2112-79-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2936-150-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/2936-184-0x0000000000400000-0x000000000046C000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.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/2936-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2732-13-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2732-14-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2936-15-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2112-78-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2112-79-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2936-150-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2936-184-0x0000000000400000-0x000000000046C000-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_7b52ffae7f920b2562d5dd51c52bdcc1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2732	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	30
PID 2936 wrote to memory of 2732	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	30
PID 2936 wrote to memory of 2732	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	30
PID 2936 wrote to memory of 2732	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	30
PID 2936 wrote to memory of 2112	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	32
PID 2936 wrote to memory of 2112	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	32
PID 2936 wrote to memory of 2112	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	32
PID 2936 wrote to memory of 2112	2936	JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b52ffae7f920b2562d5dd51c52bdcc1.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112

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\7C20.D62

Filesize
1KB

MD5
1cd8a7d8eb3e07703a67e40e101d9eb8

SHA1
601f089a12c31cbc5ddf7f2a76c7fa3dea5f25da

SHA256
9530250b567d43af67050aac18018b2d8127f3433da52938e7908c3bcee49889

SHA512
8edf29101db7491aaae9d19724563de87bf75b3f6df6b89c7a348a04be4bdea98ddb55f6d89708ea43418592a1d7548bc77ba7bc810d5fff384244e598f3365f

Download Submit
C:\Users\Admin\AppData\Roaming\7C20.D62

Filesize
600B

MD5
5506d679336cc991d352972e98d4633c

SHA1
7134cfc8dc3ccff33348c40e955d4007825203f4

SHA256
bb48e19c26d56acda8926428b8462ed0ebce42a303e2a5ac5f8874111deaf67c

SHA512
eb1a92dccf98201f0d1a4e9f1a69debc10d3d9b01309ab99eb0a8e57cd416e6d84a23196b16d5e48317dfc7e16259d879370f907c08d3dfed0f05645d7486b95

Download Submit
C:\Users\Admin\AppData\Roaming\7C20.D62

Filesize
996B

MD5
cdcf71d156afdfe97c794be4f7ebd9d7

SHA1
a13ad69c9b3eb866fae7547652dcca7e09c0a36f

SHA256
95924177f23a966f01decfd010da0e56aca6a88480763a62c1e7811d8dc4f5c6

SHA512
2683f7baf58e1d678d4450703e5dc9bccd6a44ed68ceae8cf8ba93efb9e08387f9c5b0fdbd038fac7413dbd1aa91480d9e49ce3b0a118e06a4b3fb23b60a19de

Download Submit
memory/2112-78-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2112-76-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2112-79-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2732-14-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2732-12-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2732-13-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2936-15-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2936-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2936-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2936-150-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2936-184-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads