cycbot | 8bd9d7bc3c342f415240066c32041c8f7a8f652913a653ce7c769a0ffb6039bb

General

Target

f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
Size

198KB
MD5

f04c49ee2bfc17c0ad1f36946fa8b668
SHA1

b07c956ae1ab20edf29ec9bee8c519e3fe69afd5
SHA256

8bd9d7bc3c342f415240066c32041c8f7a8f652913a653ce7c769a0ffb6039bb
SHA512

87bb3938e110db39a497e65a154ed115afd95caace0a805960898677a988f4cc33c803e9f666e58b4a965c907a8fcdaa79a5795d62df22baf0987fee93efcb46
SSDEEP

6144:x38zsLiX4ldI59IU3lCNrAk3d5VIBksoS9KQ:xM/IdW6r/d+NnK

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/2044-7-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2036-15-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/1648-76-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/1648-78-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2036-79-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2036-192-0x0000000000400000-0x000000000048C000-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process
PID 2036 set thread context of 0	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
PID 2044 set thread context of 0	2044	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
PID 1648 set thread context of 0	1648	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2036-2-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2044-5-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2044-7-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2036-15-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/1648-76-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/1648-78-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2036-79-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2036-192-0x0000000000400000-0x000000000048C000-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	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2044	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	30
PID 2036 wrote to memory of 2044	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	30
PID 2036 wrote to memory of 2044	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	30
PID 2036 wrote to memory of 2044	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	30
PID 2036 wrote to memory of 1648	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	33
PID 2036 wrote to memory of 1648	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	33
PID 2036 wrote to memory of 1648	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	33
PID 2036 wrote to memory of 1648	2036	f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f04c49ee2bfc17c0ad1f36946fa8b668_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  PID:1648

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\3133.6F5

Filesize
1KB

MD5
138cd72dbecc8115338e203a93cc4582

SHA1
3565aae4633be7c0c776dfa3e5afd64f1e4f5a0d

SHA256
6e16d9e52a534aa8151e79ed536da390a0d191b717bbd03704b15cbae5975452

SHA512
c639f703208b9a0e861f2ca13e1be497a9ea9d54d6f38339f703dc6304b4aa93a223cf318e19b3d4924bc8b39b716ed3bbda2ba9a906d144a812bb6de015bab6

Download Submit
C:\Users\Admin\AppData\Roaming\3133.6F5

Filesize
600B

MD5
d1b0a9521df3bed0bc50ef865777c2eb

SHA1
734a148847195f6dcd34d6e6d04c10df68be23a4

SHA256
b56e18138e6d1d431fda8dc7e2dead6ee69745f4affc0f78ae317bdfeb265e92

SHA512
dca49beb5b089f060e84cdd03a92f017b3b79d9d2fdd9966f280b0555af332b7cd492e8fe173ccb266495dfaa890bdf68d22f764b7425a8161b07287c6dbec66

Download Submit
C:\Users\Admin\AppData\Roaming\3133.6F5

Filesize
996B

MD5
77bb197e2820325000ef0f6e523914fb

SHA1
119c8213e57aca8e37bc694662af2e5709ed59c7

SHA256
ddf2bcbf037669fb49f67bd077d51184e8a63c707c1671d4acd86c94f2260530

SHA512
774c0a85b59c9119663f53481b8ba733c163fe9229e2c753a8e252fa8b5d969a9d497f93f12077b13b726e859cb244f25e3caaa54a499ce7eb227813fcaf7586

Download Submit
memory/1648-76-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1648-78-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-2-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-15-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-79-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2036-192-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2044-5-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2044-7-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads