cycbot | b7f6f45e676fc03653e6d0e75fbd641a3df750ccfe6c96efeb086cb7b71a44ff

General

Target

e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
Size

175KB
MD5

e7cfdf4caf82c6fc9466048c48c21fba
SHA1

06438b326fd3b6f2a788e04287ed8b29a2e1981f
SHA256

b7f6f45e676fc03653e6d0e75fbd641a3df750ccfe6c96efeb086cb7b71a44ff
SHA512

d16535fd1c1becbab78d8ff351da4fc76e86e3bca66a32e1ca6dece25c018db8286ee13c3d6abf26dc2e6213e2247f2c700b9f6e4c94149f7b8ee067c83ec568
SSDEEP

3072:qcunpQRY7H8/Z/pG4YiM5DmJkSttRZhPulG3yOB+AbHtoDCmPmr+BQ:t837HYNXzMBmrttRVBvpoJPrQ

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2404-15-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2640-16-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2640-85-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/1648-90-0x0000000000400000-0x000000000048C000-memory.dmp	family_cycbot
behavioral1/memory/2640-163-0x0000000000400000-0x000000000048C000-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"	e7cfdf4caf82c6fc9466048c48c21fba_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

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2404-15-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2404-13-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2404-12-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2640-2-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2640-16-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2640-85-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/1648-88-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/1648-90-0x0000000000400000-0x000000000048C000-memory.dmp	upx
behavioral1/memory/2640-163-0x0000000000400000-0x000000000048C000-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	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2404	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	30
PID 2640 wrote to memory of 2404	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	30
PID 2640 wrote to memory of 2404	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	30
PID 2640 wrote to memory of 2404	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	30
PID 2640 wrote to memory of 1648	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	32
PID 2640 wrote to memory of 1648	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	32
PID 2640 wrote to memory of 1648	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	32
PID 2640 wrote to memory of 1648	2640	e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e7cfdf4caf82c6fc9466048c48c21fba_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - 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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\648E.8FB

Filesize
1KB

MD5
e7ebb15c8ea6c2eda67d81227346740e

SHA1
1bd6936373dee908f62d9d1a4890b2b8dbbb337e

SHA256
a4d4ead7eed1d7fa70d274f085dcf7b57fd16b96f81427f5f679ec440f4aa15f

SHA512
22fa71c98a2a3a39ffb5f30ef99ab53c1c2be7d90c4b095645e97017cb220d3b697db70e0209198a40e2df47d408198c5574bf87fe6c7a5ed4bab2d733801db7

Download Submit
C:\Users\Admin\AppData\Roaming\648E.8FB

Filesize
600B

MD5
ec65bb9ecebeeda7fa6a5e2ade3c9ba7

SHA1
ae2e83dc29b397a719f073b000f9f01c1cda02ea

SHA256
ee984813ba7b474599f9e01c6af3b167d578331d3cb0bf0ac45a6b760833cdd1

SHA512
7136fb3e401c0bb549138b94e569a5f59010fc07c4084abcf3f45499f5cba2c310cf22fe587fcde7a497b803ba4c8d873beeff2e6cea992f3d2efcc4932170ff

Download Submit
C:\Users\Admin\AppData\Roaming\648E.8FB

Filesize
996B

MD5
875bbf2269f9431f21288808d22718c3

SHA1
2c411613148f6930d78165df535207bfb6e14c3f

SHA256
1448a2a5b33862fe749d5fde49c07ba107102fe46ad7ea1b8ac9e9d16234e929

SHA512
f5acf757558c5a40368555ba9b90cee29b0ebc5e1072e8ebf924b2dd9a07fffebea5e9f4c3f4bb14a9cfdd46285e672ab410673a07dc3b39d0d27c8b37965f12

Download Submit
memory/1648-87-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1648-88-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1648-90-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2404-12-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2404-15-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2404-13-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2640-1-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2640-16-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2640-2-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2640-85-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/2640-163-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads