cycbot | dc77c3681c771dfdf2bc5471537b068655429741891ccc6cde717c571adce276

General

Target

97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
Size

197KB
MD5

97275bf43a8a0eff3b23bd18ab28288a
SHA1

352a4168ef61b00b5f25d432ec3b109b0eb5d2e8
SHA256

dc77c3681c771dfdf2bc5471537b068655429741891ccc6cde717c571adce276
SHA512

71c2403b7c35279cff82d85d0ed8b8f9147a39d384fea21b88f899a75cd14e11d3dcae0c20a2bf89abd04cac1e400b1c53951e4476a3214632e44dc7d46ba61f
SSDEEP

6144:zF9pAsRJFmLtO9dtbeF+8EIT6Af0qWBZYKoN/XbNc:zFrAsJktQdtbeF+JjM0J

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++.

Processes:

resource	yara_rule
behavioral1/memory/2772-7-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2140-16-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2188-79-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2140-80-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot
behavioral1/memory/2140-188-0x0000000000400000-0x000000000048B000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	97275bf43a8a0eff3b23bd18ab28288a_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 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2140-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2772-6-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2772-7-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2140-16-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2188-78-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2188-79-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2140-80-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2140-188-0x0000000000400000-0x000000000048B000-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

Processes:

97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2140 wrote to memory of 2772	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	30
PID 2140 wrote to memory of 2772	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	30
PID 2140 wrote to memory of 2772	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	30
PID 2140 wrote to memory of 2772	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	30
PID 2140 wrote to memory of 2188	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	32
PID 2140 wrote to memory of 2188	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	32
PID 2140 wrote to memory of 2188	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	32
PID 2140 wrote to memory of 2188	2140	97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\97275bf43a8a0eff3b23bd18ab28288a_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188

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\D508.025

Filesize
1KB

MD5
770b30e00e30bcafa4abb538738b0f3a

SHA1
8216d151547d22fa4283340addd37b928f9ad285

SHA256
82ca95c25faf1a4381674a5cfb66bc65f0d1baa395e7ac77a66ee0ec14096ae7

SHA512
7fa7ab4357fe56dfe7abf10213b81f88f3fdafb8c0780f2b8c22bfb9c793f23d9121000b6079f94b94a2d378b34828c5587b31e7b65f6e6a1d35a814bdd17dd0

Download Submit
C:\Users\Admin\AppData\Roaming\D508.025

Filesize
1KB

MD5
45bc8ea55d0a30347440e76d62a8ceb4

SHA1
add99b157151127cc822f56cad14cbf339c40f3b

SHA256
1d6e7df1c4417945f5d6504f2ab46f29b56fe0293eb01eb6fad351df4b42fbb4

SHA512
27669c1077b0f6277cf0dafce0b7dc07a4e9f1dae21a13dc5d35567100a782ca81c7436c731bb4a654a21736b2ae33ede9660ebe185c817d8134923c55579076

Download Submit
C:\Users\Admin\AppData\Roaming\D508.025

Filesize
600B

MD5
098dec8edb26e1e1af58c85bed6fc1f2

SHA1
8123a6d85bad213f43d6d6b43c3750a739f4ec7e

SHA256
3ba34bd84c798f73818e2b188b4af59ab1407c4a77a7ca3ac34c045e62f1b170

SHA512
9493aac27190764c6e56aa3e2a81d5113637d83acf455bdc7fade67c54c714eba1ea470d7cf86335ef84197886141281991210d2a13ecebe4adc640fcf9e0ddc

Download Submit
C:\Users\Admin\AppData\Roaming\D508.025

Filesize
996B

MD5
5c1af7e3e8e1f10f8da0f6fc35bf8261

SHA1
aac122a7dd0646db006eb67848147603e2e930cf

SHA256
aff759809c1af810687fbd6e4fb3e8fc5a0e300dd7abd1e037fc31acf737c9c1

SHA512
3dbd247f64c9d9f10da2e3e1796889cd17fb1e059e331b57bd8090f0638cca0ddbc30816fc6712c835ee2a67f0dbad555e742b1f90fb3fb36ec26e56e9f44d05

Download Submit
memory/2140-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2140-188-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2140-16-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2140-1-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2140-80-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2188-78-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2188-79-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2772-7-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2772-6-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads