cycbot | b656642ac0e4b4aba1c71e68cc9547920822af9f9fa593d9e1b56b1ab9c73c2d

General

Target

fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe
Size

177KB
MD5

fbffdde86057a22c554629fda352f9ec
SHA1

05b9a25c4683c5e0f0bee60c61b343259c149f8e
SHA256

b656642ac0e4b4aba1c71e68cc9547920822af9f9fa593d9e1b56b1ab9c73c2d
SHA512

75f98746b404e8d6672c94fe321eb4d9f7c484c599158c21a2b21a350e005d605c916ccf43ad50c8cab9cb26604cfb56e7f754a618d97a6cb4252288fa436bc6
SSDEEP

3072:ijR1nK4zQofxMC5yApmK/92S661B+Rws8yUdUIcaYFo09i++VzZtw/IDk:ijRRrzCAmKD818+lFT9mtw/8

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/2332-15-0x0000000000400000-0x000000000046F000-memory.dmp	family_cycbot
behavioral1/memory/540-20-0x0000000000400000-0x000000000046F000-memory.dmp	family_cycbot
behavioral1/memory/540-89-0x0000000000400000-0x000000000046F000-memory.dmp	family_cycbot
behavioral1/memory/1924-94-0x0000000000400000-0x000000000046F000-memory.dmp	family_cycbot
behavioral1/memory/540-200-0x0000000000400000-0x000000000046F000-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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.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 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/540-2-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/2332-15-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/540-20-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/540-89-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/1924-92-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/1924-94-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/540-200-0x0000000000400000-0x000000000046F000-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	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2332	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	31
PID 540 wrote to memory of 2332	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	31
PID 540 wrote to memory of 2332	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	31
PID 540 wrote to memory of 2332	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	31
PID 540 wrote to memory of 1924	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	33
PID 540 wrote to memory of 1924	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	33
PID 540 wrote to memory of 1924	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	33
PID 540 wrote to memory of 1924	540	fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:540
- C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2332
- C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fbffdde86057a22c554629fda352f9ec_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:1924

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\4803.781

Filesize
597B

MD5
ac95e51d7ca6c59906ea2ac7e5dbe3a3

SHA1
5fc01e2077d3a9039ff718b9f6c8c06991ea3d35

SHA256
0a7e334cca9340f8710b868c982326fe26735bfcd785b290f65b96fc45b3b9d3

SHA512
8fed692f4a90758eeebe3ba4ceca652d64f311aa91adce94370308e345622841648a4bfe0e3f824140d34dadd7b2fdd7657d1afbc81eeca6cfeadd349b762211

Download Submit
C:\Users\Admin\AppData\Roaming\4803.781

Filesize
1KB

MD5
bdd50749f32f5ea9dd58f7354f3d1df5

SHA1
44143985898cbc60c930ba9b7dccf156404d517f

SHA256
56ee1f4b789ed9a918a277f7dac20624901b314f732326aa255ac81ad3d90bd7

SHA512
9d6c8e8e2e36e2728f972caf95c33af31c21c633a6dfa3c51abce83034b5c66218ebbdbbc3ca319d43d55640765af8c499e83e0ea018c24edb27d7e014f26acd

Download Submit
C:\Users\Admin\AppData\Roaming\4803.781

Filesize
897B

MD5
04504f89aea72d126bc73eabe531c3a5

SHA1
72f663d6ba5ceb98f80b8a784caa2a192de0c86d

SHA256
c0555abb296baea1c85ada81014fc3e144e9200a9d9d45546cd5224d35999e8e

SHA512
a38b3a14dcaaa87ff0b643e60716d1dee4548b83d417823b19a56291b513ccbe7154b3ad6190e0ada7a638dce088b2879fc6aab69f20ab51a46eb0cb17748db5

Download Submit
C:\Users\Admin\AppData\Roaming\4803.781

Filesize
1KB

MD5
a739dba1968b829a769e674d05c02f0b

SHA1
7e1b7f0597c87a9b0f9f863208a54569127f2029

SHA256
31714f03303483ea81cfe1a9af448b0243ed609db04d34a5f71210be91d0010f

SHA512
ecf8af67f4b6733a4ce093d8f850e192c3c5b492bdc3e9b014d0a8a9bd775b9ac839fdd7d7dc96f3568126fd02c83916ebf9c493c271ae69c64a6172758e15b2

Download Submit
memory/540-89-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/540-20-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/540-1-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/540-2-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/540-200-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1924-92-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1924-91-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1924-94-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2332-12-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/2332-14-0x0000000000572000-0x0000000000589000-memory.dmp

Filesize
92KB

Download
memory/2332-15-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads