cycbot | 615c81c523e0d149c6028933b738ce73cac4635c89c628abf5bb3dd9ea7b0acd

General

Target

JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe
Size

160KB
MD5

583263a359b914b176d69a88b3646dbf
SHA1

d89e452870806ce5b381c0383bcc21fdca21f2b3
SHA256

615c81c523e0d149c6028933b738ce73cac4635c89c628abf5bb3dd9ea7b0acd
SHA512

d89e6dad243b0d6be37f98405070ac67283ce517a6f9d9e47697fbbf8a63cd24d38671baa26ce8b9f91419775f1697f64e9648b522da4571f3af3c0720fbc354
SSDEEP

3072:XZos/wh/aG0cV/2EfaSV6UjZkbPhcslzQKzH7lre:ms/wh/ayVBJVGF5QKv

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 6 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2876-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-18-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-19-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2312-140-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-141-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2904-283-0x0000000000400000-0x0000000000491000-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\\2E810\\62FB8.exe"	JaffaCakes118_583263a359b914b176d69a88b3646dbf.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/2904-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2876-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2876-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-18-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-19-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2312-138-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2312-140-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-141-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2904-283-0x0000000000400000-0x0000000000491000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_583263a359b914b176d69a88b3646dbf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2876	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	30
PID 2904 wrote to memory of 2876	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	30
PID 2904 wrote to memory of 2876	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	30
PID 2904 wrote to memory of 2876	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	30
PID 2904 wrote to memory of 2312	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	32
PID 2904 wrote to memory of 2312	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	32
PID 2904 wrote to memory of 2312	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	32
PID 2904 wrote to memory of 2312	2904	JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe startC:\Program Files (x86)\LP\B8A2\2F2.exe%C:\Program Files (x86)\LP\B8A2
  2⤵
  PID:2876
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_583263a359b914b176d69a88b3646dbf.exe startC:\Program Files (x86)\10CA2\lvvm.exe%C:\Program Files (x86)\10CA2
  2⤵
  PID:2312

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\2E810\0CA2.E81

Filesize
996B

MD5
99b5bcdbcb650c22ea7ee69756e60f03

SHA1
7a76162989ffe3149fdfc6238f8a03aaf2d7e963

SHA256
ba49bbaa070055487251b695ea8218ba8f5a14da687df072dff6b4490bdac08d

SHA512
f07c45d6e9e26d2a575649d30ef3d7fb709527027234f158676ddea66e697e3c2c34ba2f48a9f02372f9412db13a7ff0d0a818718a6e71e4da64cd063bde79d1

Download Submit
C:\Users\Admin\AppData\Roaming\2E810\0CA2.E81

Filesize
600B

MD5
fdeb3c11c07114f386d063362a0530c5

SHA1
b5693205322a77365f55cb331e7bde18df1148ba

SHA256
4c8278ea98c368ec41df58e6a27b181bce887c2dc501e432ffef42be54ee2226

SHA512
29fc910b095a53dbe3f76532f44082061697b54288b7b6ab895ec8da3885219d9842a67b739970aca000c536b7df58f8557836bb7455d44c10bb41e6b845aed3

Download Submit
C:\Users\Admin\AppData\Roaming\2E810\0CA2.E81

Filesize
1KB

MD5
53b1315a0e7ec871711ffa5670f8d99e

SHA1
0f9ad1f369306b6b3398aeba8fff94f34f61e5bf

SHA256
b64f51f41a5ca5a0c3d16c17d722301ca76312cc9a439907348f9d6fb90c5c6f

SHA512
633846734d72909bbf442950f7b18e0ab65ecfdbda83bd9e2fe40d46cb71f216440ddab60d8d1bb7c2d36b524300549ac1aa7c70db7bb9da9b144de0469de7ca

Download Submit
memory/2312-140-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2312-138-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2312-137-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2876-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2876-16-0x0000000000656000-0x0000000000661000-memory.dmp

Filesize
44KB

Download
memory/2876-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-19-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2904-18-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-141-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2904-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2904-283-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads