cycbot | b15360d4a76354cbc0dcec4fc03f527f734a16ab923f874c5e5b7f633cb5e805

General

Target

fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Size

184KB
MD5

fae1c8b620dc64415227f36408a83c57
SHA1

7bbcdb378d141a1f7af1da63369b0e7aad8e5235
SHA256

b15360d4a76354cbc0dcec4fc03f527f734a16ab923f874c5e5b7f633cb5e805
SHA512

95dc345b29dbc1b7a53cf54295442c55337bc13a0b07fdaac825e31a9088a97c15e6603db539c7d53b0d8fe05b999fe94d6932c3949d13d0eb16dbfa347548c6
SSDEEP

3072:b4ebMAvdJrQGuLIn2s8m2HF8LqCHfXeKHxbBgYJiH0yCKuv8Lc+5:8AvTrTaJs8m2HunXnRNBJiH0yC5s

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/8-9-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral2/memory/396-14-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral2/memory/396-81-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral2/memory/4980-85-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral2/memory/396-190-0x0000000000400000-0x000000000046C000-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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/396-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/8-9-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/396-14-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/396-81-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/4980-84-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/4980-85-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/memory/396-190-0x0000000000400000-0x000000000046C000-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	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 8	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	82
PID 396 wrote to memory of 8	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	82
PID 396 wrote to memory of 8	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	82
PID 396 wrote to memory of 4980	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	87
PID 396 wrote to memory of 4980	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	87
PID 396 wrote to memory of 4980	396	fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:396
- C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:8
- C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fae1c8b620dc64415227f36408a83c57_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4980

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\5DF9.2E2

Filesize
300B

MD5
b0bb38c21723c3180cc8ac8c6942c03f

SHA1
362d9baa90a92406fadd6acf6cdee6328f5bb5a9

SHA256
76f61b9fc25f4559d6f45fb58bfe46d4181205fd9c2d5b7f5c03088e55ca2d8c

SHA512
c8e1d18815480e7b1bf4654486820c76f3762519012f38951f892f21f11f942983fe12e5f25c037de206cf45e5eca996753f47e0ae60926aee6ae336d8254f2c

Download Submit
C:\Users\Admin\AppData\Roaming\5DF9.2E2

Filesize
1KB

MD5
dd2e0c698101ad272e49520be7f83675

SHA1
30a246cc6112a09fae021d74fb72503743a419ef

SHA256
85ef76016e0ef91466307bcdbcf65915b6003eb3e5827b47c9fe3e3ec0a5ba39

SHA512
41fdb76a825c6f902fe750c8ca84552fe5dcc097e3dc4d9e73ae38f63fbbdc95dd1c31e5428c47e30db9edbc99c2886d79045304ac700976292c146683eefa8c

Download Submit
C:\Users\Admin\AppData\Roaming\5DF9.2E2

Filesize
1KB

MD5
4f368610c9d6228c0140f650515d36bd

SHA1
99231aa7fc380749af576c54205e7b01430ce947

SHA256
fe21946cca6078b4d858672a5c7af0915fc9794264a6c1198f52d392f7f87a5f

SHA512
091da8a9a736da2d3b2b0f4c32e456a35af25342a23bc53b3873e2d16f0d0c4a8ef25a95e7b9f89b531108d796b58df4839e879e4e52a95a35f4ac0ddfd8ae8f

Download Submit
C:\Users\Admin\AppData\Roaming\5DF9.2E2

Filesize
600B

MD5
60acb18a57282c872fd136af61402364

SHA1
c69209c54defaa43368ecd44c671cd5e6a963bc6

SHA256
3c5d0d1818b0cffa7601a2e060e498c9dd1eac54212465c7ada38d362d8b7b29

SHA512
e4a9ca3ef1e56b6c4ab792a7857d38046457caed290c82226067bc0b77d5a3c7859f822c31fd8367e61d48d24914ef7151955bce755672c96b4ace118988a86f

Download Submit
C:\Users\Admin\AppData\Roaming\5DF9.2E2

Filesize
996B

MD5
b810c8d1e248acb61a2c2aa18fdd6097

SHA1
61f0cc3d517e38925f84ee72d31047862db0f40d

SHA256
fb7dbe404c46dab2cd0d313028c505d7deffddb5e3803df685469d1752d9fddd

SHA512
b38f99cac7ead8df233b68ce31f7786abded5a01eba4fdcc3f099b61b299017ba8b6555040fc2aa7f2854c16c3169d37d69e65c73814b09ea58ad9aa64ba17ab

Download Submit
memory/8-9-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/396-81-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/396-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/396-14-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/396-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/396-190-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4980-84-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4980-83-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4980-85-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads