cycbot | 2d6a940bd55c9ac94d31445e4435fa1251a4cbc7f9e3fb939e8defd94ca8b520

General

Target

JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
Size

168KB
MD5

4efa709f2987602b87419e5dfb0c1a35
SHA1

083b1343f903de82499d86c2c81df140fb15d4b8
SHA256

2d6a940bd55c9ac94d31445e4435fa1251a4cbc7f9e3fb939e8defd94ca8b520
SHA512

726bd55689491b969572984e67836053c8ed57cea668af98bf79d6bd82367a86949214ceec84f849e711f9af2ae5897d74f7229b7bc1a9b1c3b4dc24c0d21fad
SSDEEP

3072:MOTMST/zZDAZorA6jsOurDnV9ohNG8DOsEEbMxl4+LwWWRyILM:nTPDD96DnV96NWsEEQI+c

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/2812-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1868-16-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1868-17-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1868-82-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2512-85-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1868-182-0x0000000000400000-0x0000000000490000-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\\D0B4E\\F5B48.exe"	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.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/1868-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2812-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2812-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1868-16-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1868-17-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1868-82-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2512-84-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2512-85-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1868-182-0x0000000000400000-0x0000000000490000-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_4efa709f2987602b87419e5dfb0c1a35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 2812	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	30
PID 1868 wrote to memory of 2812	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	30
PID 1868 wrote to memory of 2812	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	30
PID 1868 wrote to memory of 2812	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	30
PID 1868 wrote to memory of 2512	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	32
PID 1868 wrote to memory of 2512	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	32
PID 1868 wrote to memory of 2512	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	32
PID 1868 wrote to memory of 2512	1868	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe startC:\Program Files (x86)\LP\48BD\E38.exe%C:\Program Files (x86)\LP\48BD
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe startC:\Program Files (x86)\4E04A\lvvm.exe%C:\Program Files (x86)\4E04A
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2512

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\D0B4E\E04A.0B4

Filesize
1KB

MD5
7e523ba6572947a5559074e80fce3236

SHA1
7ce0c4909e6a8a7a09d1d79598dea83d09754c0a

SHA256
d2a76b6f4dcb8541f86b5a4b44d9a9c4886c97751ba0f0f0eea27565d9597249

SHA512
70f0bb3b8e3298871b0b0603e7310ba0eca92471a82c17202f48997be6240e6802fca10ab1eb46b4d156087a4966f3acf01772577292f115e9d0a9628bce1ff1

Download Submit
C:\Users\Admin\AppData\Roaming\D0B4E\E04A.0B4

Filesize
600B

MD5
5241c59c6ffec48fa9b66a06d2339738

SHA1
bdec10986c672ae4f27fc602dbc3f15666cfafde

SHA256
457a043c3abcbe8d16b99f0361099e9be2eb9f3f570a6c8c7e83f8d9b2d130a8

SHA512
4897a92d5a6560dffd1f267c313218cd12a59df911f0f75e921a866eaa67f670f5e8ea248bea9a4368cd1d241da9d7b4a29243caccd20030fed096e4b55f3ee4

Download Submit
C:\Users\Admin\AppData\Roaming\D0B4E\E04A.0B4

Filesize
996B

MD5
a297d796a95ca9b5254ee6b372f79a61

SHA1
8888dd8bcea8f63b929964651e48e2d59f656542

SHA256
2350134bb234fc6e85bb7544e92b087bec7b18738a289d497978f7df0d59a6a9

SHA512
12115799aa86a375b0f2fb2a87b9bc02219063906af1e82f8b0599cf74893d5c8e737dc5b0576afb3999975167c98098bb2e29aaf7013e47225e8b1d563a189a

Download Submit
memory/1868-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1868-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1868-182-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1868-16-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1868-17-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1868-82-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2512-84-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2512-85-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2812-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2812-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2812-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads