cycbot | 1d9e42c7b932afa13ae0fae436f458e96898d27e5d1e54b479fc76ba53d97bee

General

Target

JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe
Size

165KB
MD5

4ba75e78ae2bf5403530a4ecc083c1c3
SHA1

28118be5be0eb63cd02b0941328449bb92da747d
SHA256

1d9e42c7b932afa13ae0fae436f458e96898d27e5d1e54b479fc76ba53d97bee
SHA512

609da943c6a6b116179e890985a162dcfe8b27f959c6e06db5a92d00990e2dce18be864b0ada7b810d3e4e0965dc34342f2d446596e15808d4b1e184f7c07d92
SSDEEP

3072:hMMbRiYdtr+FnuJ2PaCZwXPlbPXHVO2oBvQ6xNDCnz1dShLeA184Uum9xVp:hzb0Ydp3Ehih1PoBI6HDw11A184UTxV

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 8 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral1/memory/2460-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2460-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2164-18-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2164-19-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2504-126-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2504-127-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2164-128-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2164-306-0x0000000000400000-0x0000000000491000-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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\C882E\\49232.exe"	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2164-4-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2460-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2460-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2460-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2164-18-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2164-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2504-126-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2504-127-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2164-128-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2164-306-0x0000000000400000-0x0000000000491000-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_4ba75e78ae2bf5403530a4ecc083c1c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2460	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	31
PID 2164 wrote to memory of 2460	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	31
PID 2164 wrote to memory of 2460	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	31
PID 2164 wrote to memory of 2460	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	31
PID 2164 wrote to memory of 2504	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	33
PID 2164 wrote to memory of 2504	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	33
PID 2164 wrote to memory of 2504	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	33
PID 2164 wrote to memory of 2504	2164	JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe startC:\Program Files (x86)\LP\327C\D5E.exe%C:\Program Files (x86)\LP\327C
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2460
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ba75e78ae2bf5403530a4ecc083c1c3.exe startC:\Program Files (x86)\2E5B9\lvvm.exe%C:\Program Files (x86)\2E5B9
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504

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\C882E\E5B9.882

Filesize
996B

MD5
2f40ef4ceadebaa2164ca8cfcb3596bf

SHA1
ed3a7de5a81f87b121576ebf3538347ef6c7f84d

SHA256
23d8ab7e54c6c8009b72299562ff5a37e4676cf231aa0095c3a8a6601d701ce2

SHA512
6b7fa0dc007b01dfd88e61d1e5c0a9055ac3f20acc67cd33657698ded92356b0b9d82b61c4ca05e5191f8279068443d56de0a693b399ef75806a39b03c2bc9b1

Download Submit
C:\Users\Admin\AppData\Roaming\C882E\E5B9.882

Filesize
600B

MD5
38482b5ec075f0944283175c86ec96fb

SHA1
8bf94ed76d17be37f2f7ec27333adb9efd10139d

SHA256
9853969624fa66c8924d523d967478e9407db2e9362ab706215a6187a62a1511

SHA512
e0c5c851a6aefe1dcb03457d1c6eb36f2c39553c65c6962f53ef62b15cf6f7f2dbf47c1e9b69e8c3a0b9db9746a46f4e3befd7fbd99ad064343f96faee535c74

Download Submit
C:\Users\Admin\AppData\Roaming\C882E\E5B9.882

Filesize
1KB

MD5
ba7a1c353a1cb9afc5051979df9a1b69

SHA1
bb907fa44454b8c73ce0a9a0c2566fb1b6542fe1

SHA256
d5a04174b388e099c2d9b10d0d31336594656756205691ed409559eedde4d350

SHA512
5dcf0e86303a69e27c828611f3fdd80ce8309ce5cc013b32ed93e3bba1e92831a79eb5800edb3187e5ee4499f5e628ef62c80f56abace8310083871c102e19df

Download Submit
memory/2164-128-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2164-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2164-4-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2164-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2164-306-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2164-18-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2164-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2460-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2460-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2460-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2504-127-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2504-126-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads