cycbot | e9c4eb8d6852effc2d532045026c8919985e0c4952cfb6031b2576e9fb38523b

General

Target

9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Size

181KB
MD5

9071898241ee80dc0e52c7d81b0624c9
SHA1

b81cf0a4301253c2479da43ce7f8d7a31694da7b
SHA256

e9c4eb8d6852effc2d532045026c8919985e0c4952cfb6031b2576e9fb38523b
SHA512

35fd277b1c4066624a67dc8c5ca32dd27e05e809ac041f387f7ccbf660243f1634f574cd1cd31d1c643e0b6a591781c66d71f3efb3895285f886281b50398cf2
SSDEEP

3072:aDc3QjJdZq6PQQIjlUEWF6jxVSEAmnp8jRzc/vqB/y17MNyuuYm:acgj4iUH86jJp8jVc/vq4DuuV

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 6 IoCs

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

resource	yara_rule
behavioral2/memory/5056-13-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/880-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/880-85-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4984-89-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/4984-87-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral2/memory/880-207-0x0000000000400000-0x000000000046E000-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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/880-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/5056-12-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/5056-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/880-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4984-86-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/880-85-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4984-89-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/4984-87-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/880-207-0x0000000000400000-0x000000000046E000-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	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 5056	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	82
PID 880 wrote to memory of 5056	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	82
PID 880 wrote to memory of 5056	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	82
PID 880 wrote to memory of 4984	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	90
PID 880 wrote to memory of 4984	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	90
PID 880 wrote to memory of 4984	880	9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe	90

C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5056
- C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\9071898241ee80dc0e52c7d81b0624c9_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4984

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\35EF.957

Filesize
600B

MD5
5906b5d42135655dd4b73747de03048c

SHA1
17477d0298780b341f9233a7795facad76af751a

SHA256
126a826e9ce33e672b1d88f4f3a16dc489c05e8e355fa8eb9c61a96b7dab2c67

SHA512
283ddf0b9cf922e6122eacfa922d2c0649ef884a232a690d4ef85c80c7531c59ad5ba790a197a88fa9acab26bcca7e2af302a8fc451398dd6192c49047727998

Download Submit
C:\Users\Admin\AppData\Roaming\35EF.957

Filesize
1KB

MD5
6a4615ed144db77197b5811279550089

SHA1
465d786ac92721677dafd565708856a5a3f36c3e

SHA256
7f74989bb33c05f6f416f6d7ac50e7c101d0d5edbc191e6f36a9837f32a224a8

SHA512
fa33b47fe56ad55608393eaf0449dbcfd64b4c6d9656c3188ff9c45775ead60d2c0dc70f4c950f2b452f950e5fa3176a09d13ab8dbae63b59418b536077df47e

Download Submit
C:\Users\Admin\AppData\Roaming\35EF.957

Filesize
996B

MD5
2d6651347152594e0d557bf049f0dbb0

SHA1
dacd1538df9cc7434344f9b530e06f3f13c1d739

SHA256
2c9fb9c739789f78631becbf5e908e7eb60e9ba0bc11e6da570a502d34b00f8b

SHA512
4a677548e6a35a966efc4b5e5c4ff45aece128fbb7282cdfc9d8d3aee11cee7100c61b11ef3d45d1bdcf14fa55736a97498162bc4fc2f42df0689c79222069fb

Download Submit
memory/880-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/880-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/880-207-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/880-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/880-85-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4984-87-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4984-89-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4984-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5056-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/5056-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads