cycbot | 24aa58f6c201f91fb1ccc0e12ee2d8442945aa9ede390e7f41dbf97823a00535

General

Target

JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
Size

184KB
MD5

99b04d3795ea642bcac076dd31c86826
SHA1

6f31ca127393d37244be041a78b57bd16e19340e
SHA256

24aa58f6c201f91fb1ccc0e12ee2d8442945aa9ede390e7f41dbf97823a00535
SHA512

640290f503bafe0efeb5af3caa72114f37eab7e93351eea970257111d1276540e775b270b2bab4568395982bf384d9bbc342ef27a2fe1298e42e25c4c1b07e2d
SSDEEP

3072:tClbp7aqoeoCFCyvS5KRFBAuysFdQ6aDHJt5jMyFoTw4ZMnG1LyQIqxnl0i8wt:UlbRXEKRXxyjlDHJt5R14unWjswt

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/2356-9-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2528-15-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2528-75-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/1260-79-0x0000000000400000-0x0000000000470000-memory.dmp	family_cycbot
behavioral1/memory/2528-182-0x0000000000400000-0x0000000000470000-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"	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.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/2528-2-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2356-9-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2528-15-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2528-75-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1260-78-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/1260-79-0x0000000000400000-0x0000000000470000-memory.dmp	upx
behavioral1/memory/2528-182-0x0000000000400000-0x0000000000470000-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	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2356	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	30
PID 2528 wrote to memory of 2356	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	30
PID 2528 wrote to memory of 2356	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	30
PID 2528 wrote to memory of 2356	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	30
PID 2528 wrote to memory of 1260	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	33
PID 2528 wrote to memory of 1260	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	33
PID 2528 wrote to memory of 1260	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	33
PID 2528 wrote to memory of 1260	2528	JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99b04d3795ea642bcac076dd31c86826.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1260

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\A96D.4EC

Filesize
1KB

MD5
eecfc12f54bc4cece26ba7bb4c44007b

SHA1
aff675bacaa59575c46603d379237803b075e9cc

SHA256
9a48077232d0d0e8f029fbb54bb7268a35e3e96250583b20459b3f1e96d49b31

SHA512
4108eee58d400d15274670c05ac32a8e7ec38a5f0f5ac1eb380f9352928bc80f41075bbe9c9388e0c55544cac736c17736b05b0567d218e077460652b54a9dd8

Download Submit
C:\Users\Admin\AppData\Roaming\A96D.4EC

Filesize
600B

MD5
157b49707eac621c2eb53d5b2a38fa3e

SHA1
284c822ba06f066a96f7e95af97f176dfbfbdd6e

SHA256
f0ebdc3428b6f5903ad809c391ddd50354c7572ba8ff703d8ca315e36670cf59

SHA512
07b16bfda43abcc0a5ac0574794ce691b44bdd5c7cc87badb3965249366abdea9f8416fc146819691ed2e1fe1f75c659bce5d73a3258767b31d4cb76a8454aec

Download Submit
C:\Users\Admin\AppData\Roaming\A96D.4EC

Filesize
996B

MD5
dfa15bb6fa1538dcef23a591d7109208

SHA1
913c7fe14e87f261edae438711f71ee763288473

SHA256
23ddadaca1901cd683408637d7889a0dfa068e8cc2ad0e5d88cfd3644a010c96

SHA512
2580db450a93c345d45c0043b5cb3d1a66615a945cbad53d54b9695d630e8044d9ae10581a22620cf6dcf717d216087ec0000b970e95b91003bff40ceaeb9581

Download Submit
memory/1260-78-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1260-79-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2356-10-0x00000000008F7000-0x0000000000915000-memory.dmp

Filesize
120KB

Download
memory/2356-9-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2528-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2528-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2528-15-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2528-75-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2528-182-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads