cycbot | 23c0f4cd9090b3e3f6b5be673dc8bbab70431f4736cf05f39fcd854527413ae9

General

Target

JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
Size

176KB
MD5

a8b17aebfcd64862068ee2635acaff35
SHA1

88e58562af8f52527c7ad4bdeffb1e138cbc7f7f
SHA256

23c0f4cd9090b3e3f6b5be673dc8bbab70431f4736cf05f39fcd854527413ae9
SHA512

e87c11a5d3b132db23c1da47213318890b2c35857dd789d52309475264f5f98f88f43c91e55d7f5ddd07f9f3c3caf0eb77be8ff047f1a090f4bb729c25f8fe78
SSDEEP

3072:/CsNAKJx/U5K5X81JAhMcQM3+2Kl9Vd/PwmJ35I7EFEes5iPMARCksh2c6JNB5oS:/DAQG5rJgMcvgl/Pwc36OpXR+hF6z7bX

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/1692-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1592-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1592-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2856-115-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1592-116-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1592-294-0x0000000000400000-0x0000000000491000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\9A4A2\\C0BBD.exe"	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1592-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1692-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1592-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1592-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2856-115-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1592-116-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1592-294-0x0000000000400000-0x0000000000491000-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_a8b17aebfcd64862068ee2635acaff35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 1692	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	30
PID 1592 wrote to memory of 1692	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	30
PID 1592 wrote to memory of 1692	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	30
PID 1592 wrote to memory of 1692	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	30
PID 1592 wrote to memory of 2856	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	33
PID 1592 wrote to memory of 2856	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	33
PID 1592 wrote to memory of 2856	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	33
PID 1592 wrote to memory of 2856	1592	JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe startC:\Program Files (x86)\LP\BD19\96D.exe%C:\Program Files (x86)\LP\BD19
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8b17aebfcd64862068ee2635acaff35.exe startC:\Program Files (x86)\A2E70\lvvm.exe%C:\Program Files (x86)\A2E70
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2856

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\9A4A2\2E70.A4A

Filesize
996B

MD5
20b8540dc977c687d793dd70699d038a

SHA1
65aa3aadf3af72b0dcf8399ad4e014ca2299433e

SHA256
af38d5c536f3dfcbfc36bf567d76ba3342fd3477e8d6e3e89504553bf3776cd0

SHA512
ff87a01e36f7faf7171fe0631c95d36682ce4ec2ae7e0cfb8ada941e61d2295c16785d7b7a56de0af985a24bd4188ac9ad1ce732276876d44f4842f9c4b24233

Download Submit
C:\Users\Admin\AppData\Roaming\9A4A2\2E70.A4A

Filesize
600B

MD5
02166759454e8fd55c947211e26b2b6f

SHA1
8c1ab2d01e1dcdad0cfa9b981f48aad344448089

SHA256
ab076e7539cb1cf780d0c2991748ec311b657833af0c3272bfa35cfd3be4ce5d

SHA512
e398755e65eeba9b7208df07d454a8e59d250089a93ba6356da67f551afef710a7797e948ffca5308c48aba026210391b848fcb3c0cce299fb1ccd698a70c010

Download Submit
C:\Users\Admin\AppData\Roaming\9A4A2\2E70.A4A

Filesize
1KB

MD5
a6949c0570e9f8fdc0e293f1c85cdd1d

SHA1
19690decca62e2fa9b30ca03f3d2539e9a9633c0

SHA256
14434016678ff76de13ca9d02d2cda991258557b43da0773b0f05ae5975178b2

SHA512
d1b9e5346edc2d3b7ea10aed672de1977bcff052afb01b91c0e7af06390f20f2917a104b697a661d037eb5210b2a5cdbafda9547541b65bc68d3fbbcc78108ce

Download Submit
memory/1592-116-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1592-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1592-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1592-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1592-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1592-294-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1692-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1692-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2856-113-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2856-115-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads