cycbot | 78ecfce32a61d5786f094f4fc82bdc184b247c346473a931fb909ef9424ed34f

General

Target

JaffaCakes118_64b853885a233519a4b8d9f462267915.exe
Size

173KB
MD5

64b853885a233519a4b8d9f462267915
SHA1

2212c84eba7e4372da9d88fc128047e39adb372b
SHA256

78ecfce32a61d5786f094f4fc82bdc184b247c346473a931fb909ef9424ed34f
SHA512

bca84625cb2cbacf9b7225f8f5232f449ad972d54dcc449e3c5bbe9453f891160e87e1c6624a4269934710583b3c302ab034fd7415227070bde1c409361bcea1
SSDEEP

3072:3ve0oLKME1LpH+8IlUeN2d1zSdiCKnXUBsjaAtQbCcaSwpZzftQhjrEa:sLKMmLf3ewdZwizgsa3aSqfWjrEa

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/2440-8-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/1148-15-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/1148-75-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/2640-78-0x0000000000400000-0x0000000000483000-memory.dmp	family_cycbot
behavioral1/memory/1148-160-0x0000000000400000-0x0000000000483000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_64b853885a233519a4b8d9f462267915.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/1148-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2440-5-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2440-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2440-8-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/1148-15-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/1148-75-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2640-77-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2640-78-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/1148-160-0x0000000000400000-0x0000000000483000-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_64b853885a233519a4b8d9f462267915.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 2440	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	28
PID 1148 wrote to memory of 2440	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	28
PID 1148 wrote to memory of 2440	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	28
PID 1148 wrote to memory of 2440	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	28
PID 1148 wrote to memory of 2640	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	30
PID 1148 wrote to memory of 2640	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	30
PID 1148 wrote to memory of 2640	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	30
PID 1148 wrote to memory of 2640	1148	JaffaCakes118_64b853885a233519a4b8d9f462267915.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2440
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64b853885a233519a4b8d9f462267915.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640

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\7C06.6E9

Filesize
1KB

MD5
d481c649629f9c9946d00b2488dae17a

SHA1
9a8ecd31c959d2eeb0d0da374db17abc78993110

SHA256
eb6157d6e6175967c14f12e382a1406167de735cab24eaaf44697fb92b5be7ed

SHA512
552ebe27fe582919e0cd1895cfb2ec1c1c8d2717b0c3cedc1afcb672b319e4d017ae5a4c5de67fd35e8fc8dd85f8c68ee0e7165350334060f3a49e7f3c85d5a5

Download Submit
C:\Users\Admin\AppData\Roaming\7C06.6E9

Filesize
600B

MD5
ebf7b87af101166306f374348d6809bf

SHA1
99711bc11fa352ac61344ed0f58e9f81cd5f146d

SHA256
aaba927b9e3aea7116e7f9c8c98515920fbe7087008addbebad273f8f0e5459d

SHA512
9a8feca40a98ca237ad3148aed96077ad3249375cb44e4e0c4b3e17f507c9a8fc037584cdf31127086dba2b5a607e3058b004bc372764e3981f7e1f7d07194cf

Download Submit
C:\Users\Admin\AppData\Roaming\7C06.6E9

Filesize
996B

MD5
176f4874953e49b25cc9fcc6298b5a4f

SHA1
4e2a22cec7d9248aad33b63fbffca1418f8590ef

SHA256
be0551ba9d631f91cbf8059ec4e1c5c762d25a97bca9b271b8e70106490d8cae

SHA512
61b0ad10570ce7c2c378939210466907f12c16328d71d6915f21e5b5c257a9b4f38c933dde013386cb0329d23a8f0f96b321501a213acf147dcd73a42f0365d5

Download Submit
memory/1148-2-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1148-160-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1148-1-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1148-15-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1148-75-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2440-6-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2440-8-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2440-5-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2640-78-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2640-77-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads