cycbot | 22f4b33929989101a1f6d118cb64379fec36f16016ee9a7edc71f3cf1479e9a3

General

Target

JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe
Size

172KB
MD5

c5f575aa740961e2e7066e15ce9ac6c6
SHA1

8acf825ebd7b81e4d06507de2fa8cdcf847378ef
SHA256

22f4b33929989101a1f6d118cb64379fec36f16016ee9a7edc71f3cf1479e9a3
SHA512

1e218c950d350b0a38cd969d8cd73ad058b031b664bccabd9ab4de7f8c6a3db931e345da034f45fea09c0227335a77c6e59ea24a2d51014ad230eb5b0109a7e8
SSDEEP

3072:BCfuCAZWOG6w4j3Gvt6NicQid8lRsgeh8QHNnAYRWnThy5Tv4I5TKn3d:ZCD6ljCuiti6R5cNnAOWdy94Ld

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/2036-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1980-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1980-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/1736-142-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1980-143-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/1980-333-0x0000000000400000-0x0000000000491000-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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\C1525\\94FC8.exe"	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.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/1980-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2036-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2036-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1980-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1980-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/1736-142-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1980-143-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/1980-333-0x0000000000400000-0x0000000000491000-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	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2036	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	31
PID 1980 wrote to memory of 2036	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	31
PID 1980 wrote to memory of 2036	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	31
PID 1980 wrote to memory of 2036	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	31
PID 1980 wrote to memory of 1736	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	33
PID 1980 wrote to memory of 1736	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	33
PID 1980 wrote to memory of 1736	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	33
PID 1980 wrote to memory of 1736	1980	JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe startC:\Program Files (x86)\LP\C88C\747.exe%C:\Program Files (x86)\LP\C88C
  2⤵
  PID:2036
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c5f575aa740961e2e7066e15ce9ac6c6.exe startC:\Program Files (x86)\2543A\lvvm.exe%C:\Program Files (x86)\2543A
  2⤵
  PID:1736

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\C1525\543A.152

Filesize
996B

MD5
19ffd6581ab020a513bfed00f155e105

SHA1
df1a1dcfd5f26239daa8f0d9d85bd0cf1592c7c5

SHA256
0774b8f7cd533365b67dae34822a5ab4aac019bc34ada641fb258c3e8ac7922a

SHA512
42b5fc0241f9f5687125ce019afd345fe274315c393f18e4a3e94e6fc87752971f5a3ba64f6a97dccb30d6092f86a29b55d2efc49a3516bebcac5c03a242f9ed

Download Submit
C:\Users\Admin\AppData\Roaming\C1525\543A.152

Filesize
600B

MD5
8361b8e495ba353cd25ab20620e1e0c4

SHA1
a1213836fd76ea01722b132aa019b0ebdbd0d6b5

SHA256
9d614c60340a6f473d2df1bed94fead4756af71300342d30b5a22cd356b1d32d

SHA512
615e003c2f376e37d95aba5203bd7e57352cbcb3f59521f7d4faee2e71e5725c4b735afca3922676dff17b2a294d4859df531e8142288192c6d1817aa54d4fa2

Download Submit
C:\Users\Admin\AppData\Roaming\C1525\543A.152

Filesize
1KB

MD5
a6478bcba9edf50d90ad2241870e0fb5

SHA1
bac975f99198592a2c47fa9601b1dfd56234a742

SHA256
00ef2c5c77368f6281fde3108b5a6330fa76d3a8164c88978716aace4ca0082c

SHA512
9be63cf7df4ccbb2654e13cc3f17dcaf064b2524e4040a28bf160832d1e2ff9f7fd077ea3a92d51095581be2e796303b615bb69bade897b82714528c1e886f72

Download Submit
memory/1736-142-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1980-143-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1980-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1980-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1980-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1980-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1980-333-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2036-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2036-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2036-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads