cycbot | 71e645fa6968a5308e315fff5cc17aaba73125b2161d5c9806aee68b8a95e8e5

General

Target

JaffaCakes118_38728d9907553634d48d7273063b11e2.exe
Size

164KB
MD5

38728d9907553634d48d7273063b11e2
SHA1

c91fda7d6e0c081c10a8e36f006ada0a24540ff3
SHA256

71e645fa6968a5308e315fff5cc17aaba73125b2161d5c9806aee68b8a95e8e5
SHA512

72ca8fd47a8896ca339415c45a3d0f2640d42f6eb4783e9fa8b2d7feda096a50465b6ffdc99955738c8cb2423eab829c38e09017ae92e660a5eff2857cb2e0ab
SSDEEP

3072:RUVFkahDKNON9Ls+u3PPRrih4eexeeuRC8F4eyFcKkMtIyzQfCiroDRPL:eFLJM5riRMUPCzcKhnzQKLD5L

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/2100-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2384-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2384-19-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/664-125-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2384-126-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2384-284-0x0000000000400000-0x0000000000491000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\46EA7\\7D81A.exe"	JaffaCakes118_38728d9907553634d48d7273063b11e2.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/2384-4-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2100-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2100-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2100-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2384-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2384-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/664-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2384-126-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2384-284-0x0000000000400000-0x0000000000491000-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_38728d9907553634d48d7273063b11e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2100	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	28
PID 2384 wrote to memory of 2100	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	28
PID 2384 wrote to memory of 2100	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	28
PID 2384 wrote to memory of 2100	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	28
PID 2384 wrote to memory of 664	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	30
PID 2384 wrote to memory of 664	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	30
PID 2384 wrote to memory of 664	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	30
PID 2384 wrote to memory of 664	2384	JaffaCakes118_38728d9907553634d48d7273063b11e2.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe startC:\Program Files (x86)\LP\1A34\95C.exe%C:\Program Files (x86)\LP\1A34
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38728d9907553634d48d7273063b11e2.exe startC:\Program Files (x86)\A73E4\lvvm.exe%C:\Program Files (x86)\A73E4
  2⤵
  - System Location Discovery: System Language Discovery
  PID:664

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\46EA7\73E4.6EA

Filesize
996B

MD5
bae3618a83dfd8fb7ae951156c64d76a

SHA1
901d72e497117243af73ac191798731e4350eec1

SHA256
74deea4204e40ae25dcc1de86171ad9e3b6e815759e6944ca47c64562fb975e8

SHA512
331a675ab12c1d0b6aa7abc3c6c1f1a013035fdd220bfc206a11295efaa3289050dea7288bbe829cbe2ad0e7ef5eef827b1df7b3248cd2596cae9e15399341f5

Download Submit
C:\Users\Admin\AppData\Roaming\46EA7\73E4.6EA

Filesize
600B

MD5
b3ef33231216f1cd58e73a13856c2032

SHA1
c1da49272a97425ab9b843251db6c3650389c23c

SHA256
75302f6dd92bef521234396edc6144296a51b8ecdeba5d99fc56475dcdfaa893

SHA512
94d2ce5389285312dac26a123ff967602e4ae04aaa041e9af30be50276a12dcee38206d4f6e4d44d2550aa0fa060bb42d843dc757305870fb67aa09280d2790c

Download Submit
C:\Users\Admin\AppData\Roaming\46EA7\73E4.6EA

Filesize
1KB

MD5
1f71d69a5788060fc500fda0474a24ed

SHA1
220b9a41919e3b3c7a1034d64c30e79c67e55b64

SHA256
2066e09f51ba3061ebcdf096ff03975a8f88af6e146f5c9291ad604160ad8af5

SHA512
86497255c1f76c9ab3f7566747d5b94e332b4c2f97f588dab359dbde55466ead97101c99e8bb123b2ca9b17a3c9ddae3499ebcfe8d5b95eccf25d7c059c61fa3

Download Submit
memory/664-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2100-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2100-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2100-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2384-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-126-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-4-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2384-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2384-284-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads