cycbot | 2125a1e00be1bd129634cdd69d9540a4c49ae1864702547ada32ec70da42c95c

General

Target

JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe
Size

177KB
MD5

3be07720d75271452be60d7ea80d508a
SHA1

ce8685fbc1a0ef90eab3911b64e3cfebd60238c2
SHA256

2125a1e00be1bd129634cdd69d9540a4c49ae1864702547ada32ec70da42c95c
SHA512

375a01be852e44e3025b06f6cc58902fd12f465c028cdbe28e537218b27e00ce81fa6c038c13aae49632a1e3aea1229086dade40721f509c9f022794113af897
SSDEEP

3072:AWdbPR3RVFNvm8L8ds89HNnXbIygHVP3txJDnWUUXK6sAkqOjwPp1ipLitl9:XhPRH/vfL8dV9HNMygHVPrVWUUXK8kqt

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/2224-14-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2596-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2596-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/1564-120-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2596-121-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2596-299-0x0000000000400000-0x0000000000491000-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\\2D94C\\F0F91.exe"	JaffaCakes118_3be07720d75271452be60d7ea80d508a.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2596-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2224-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2596-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2596-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/1564-120-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1564-119-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2596-121-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2596-299-0x0000000000400000-0x0000000000491000-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_3be07720d75271452be60d7ea80d508a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 2224	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	30
PID 2596 wrote to memory of 2224	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	30
PID 2596 wrote to memory of 2224	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	30
PID 2596 wrote to memory of 2224	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	30
PID 2596 wrote to memory of 1564	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	33
PID 2596 wrote to memory of 1564	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	33
PID 2596 wrote to memory of 1564	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	33
PID 2596 wrote to memory of 1564	2596	JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe sh $MOZILLA/ %SIGILL% "SIGTERM|DESTROY|SIGKILL"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe startC:\Program Files (x86)\LP\9102\74B.exe%C:\Program Files (x86)\LP\9102
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3be07720d75271452be60d7ea80d508a.exe startC:\Program Files (x86)\4C372\lvvm.exe%C:\Program Files (x86)\4C372
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1564

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\2D94C\C372.D94

Filesize
996B

MD5
ff912892f93804987777fa2c937f2f0c

SHA1
5a8e41534f90645c8a0dbed1fbe5ee3cf60f7f2c

SHA256
145d033cf7ca9c80833111c2001e4b570e109dcddec6ff715b67d03b90c55167

SHA512
13341d86aaec1d7f9f54273a19d4c7345ae8730eb7bc2825db3b4f618a895ddf096a3f2fad8f5ae365476b37aae9d8e5d69ca062ff0f83b4c00a611339b941f6

Download Submit
C:\Users\Admin\AppData\Roaming\2D94C\C372.D94

Filesize
600B

MD5
9a2806db2a570cc5f18b156cbf1f535e

SHA1
b64de6c9775ddeea9456bbb345815b9bd1f2ec61

SHA256
59c34096c86405a31a7720783d989a6a601101e79482f0c821ac34f0b1db16dc

SHA512
6a1d101a73c1a876e7edbfff4169fa36cc3189f09db7ae7a133e471b86a5ee0a59be3076ee26bd0a79c18afe41e7fba0597fb32b480b75a6e0a81cefb6c78118

Download Submit
C:\Users\Admin\AppData\Roaming\2D94C\C372.D94

Filesize
1KB

MD5
5571f304f640f9ba30c0575318e8f4f1

SHA1
aab70ec8f6c0c489dd54b34c1b068e84e900a0b2

SHA256
c2a5a2672d410a89cf311fb10ce754ca73c097a2e5b825493143f449751c2a19

SHA512
e1f60945d5a1d7f625ea5463ad1399bc0459760d0cfc138eb518f635186db00e77807e9cdf6bc4e00aa4f33988f8cef1e4b0b575206da6a2dfcdac375d95addd

Download Submit
memory/1564-119-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1564-117-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1564-120-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2224-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2224-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2596-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2596-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2596-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2596-121-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2596-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2596-299-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads