cycbot | b29badfe1d05f069c0f6e0e63771a11c9e65e18241186d952b9ee1b86dc22a9c

General

Target

fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe
Size

192KB
MD5

fb7ef3489999a8c0dbbf3ab3d1a52e9f
SHA1

c693364964d2eb6089adbf4fea6633759a2f159e
SHA256

b29badfe1d05f069c0f6e0e63771a11c9e65e18241186d952b9ee1b86dc22a9c
SHA512

3aea7c967a3218f3ca1222ab06faa2e0f0b8e1dc463dc4c03d75115025c0cd09ff357ec59737b961cee954ed37edc04af317010002c66e64d4f32d93c73c06a1
SSDEEP

3072:7ZcAnmLBUnEj04GIYOvqdjqyd8KfG4Sd47pXQiBuAPPOQFJsfoCPB:7ZamnEjJGIbCdfbeopXQiBfPLFyoCPB

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/2100-18-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2100-20-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2872-21-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2872-88-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2492-92-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2872-196-0x0000000000400000-0x0000000000470000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fb7ef3489999a8c0dbbf3ab3d1a52e9f_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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2872-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2100-18-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2100-20-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2872-21-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2872-88-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2492-92-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2872-196-0x0000000000400000-0x0000000000470000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2100	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	28
PID 2872 wrote to memory of 2100	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	28
PID 2872 wrote to memory of 2100	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	28
PID 2872 wrote to memory of 2100	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	28
PID 2872 wrote to memory of 2492	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	30
PID 2872 wrote to memory of 2492	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	30
PID 2872 wrote to memory of 2492	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	30
PID 2872 wrote to memory of 2492	2872	fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2100
- C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fb7ef3489999a8c0dbbf3ab3d1a52e9f_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:2492

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\0FD5.57E

Filesize
597B

MD5
4f4b73dc271e48ad8adab03e556fe41d

SHA1
6dea656cba9c4618eb35652c16270937fbb50e76

SHA256
ca4cd4c485e81d782d32d6c0689b6d90ff24e7781cf203e699572f76f5a49a7e

SHA512
21614df7fe078f2d6db7dddf91e88bed190451c9780490649a97958cf4be386168a43fca6347527aefd5bc7ba075721107cdcc8eb7036edb0f30cf4bbba0980f

Download Submit
C:\Users\Admin\AppData\Roaming\0FD5.57E

Filesize
1KB

MD5
7d0be2217716d2ce6a2cfdc7c4e1c888

SHA1
d7001e638f1e3fd7322539e5e6a5ca8a40b14acc

SHA256
9af407028f600e4dfbb2113ee99285cc49b39f58933069df68b8cbe58160382c

SHA512
606b2c12eaf64e9dcb5f374c42d640a90abbf237bc83e231e40ff5edcab4de0f45deffe261085348d7cd5e0634c5060071c3ad35b59a288ea98627c94b17285e

Download Submit
C:\Users\Admin\AppData\Roaming\0FD5.57E

Filesize
897B

MD5
0449dab069d85d2b8ec694b8f0eef923

SHA1
d0d6cbd943a2103c050dffee8842180ef4cd6745

SHA256
fbc18bfb530ac9174583e7eb9f6c7ec30304350a31c12f42b4ddce17e9cf4758

SHA512
524d931fcb6408d78cffab677a11e13534c80224d2ecb344916b391f71f7ab09d2b6191562539dbb9c79c19de93d1895d5a170d1e655df422acb6ffcc723e636

Download Submit
C:\Users\Admin\AppData\Roaming\0FD5.57E

Filesize
1KB

MD5
a4861baa206fbb391cdb7837d051ebb0

SHA1
e3d44dca628ce76c9f1ed1e2411505ad0fb1fd9e

SHA256
5876969b5f89646bcaa50d0a46b9bc2446f86acfda2aac585f1a02de30ffff16

SHA512
ba45ad4ce3c3b0f0ebbcc428ea4546a5b47928964d4c5baff6c75a238697de49bad4d8d0520a6316cb2b307ea23f99c0de64ec1d4f5a29625e32f8154e96e0d9

Download Submit
memory/2100-17-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2100-18-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2100-20-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2492-90-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2492-92-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2492-160-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2872-88-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2872-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2872-21-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2872-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2872-196-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads