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 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
behavioral2/memory/5044-12-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2292-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/2292-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2292-86-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4616-91-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/2292-182-0x0000000000400000-0x0000000000490000-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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\F371D\\71DA0.exe"	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2292-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/5044-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2292-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/2292-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2292-86-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4616-89-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4616-91-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/2292-182-0x0000000000400000-0x0000000000490000-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	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 5044	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	83
PID 2292 wrote to memory of 5044	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	83
PID 2292 wrote to memory of 5044	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	83
PID 2292 wrote to memory of 4616	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	90
PID 2292 wrote to memory of 4616	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	90
PID 2292 wrote to memory of 4616	2292	JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe	90

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:2292
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe startC:\Program Files (x86)\LP\A05F\D7E.exe%C:\Program Files (x86)\LP\A05F
  2⤵
  PID:5044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4efa709f2987602b87419e5dfb0c1a35.exe startC:\Program Files (x86)\1D331\lvvm.exe%C:\Program Files (x86)\1D331
  2⤵
  PID:4616

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\F371D\D331.371

Filesize
1KB

MD5
e77125bcec936e98ab705dc7fedaa629

SHA1
03d74219c0fad979ccb66da27e6101d335467695

SHA256
194ab7bfdf7d8f08b1260e5eae702e08c7a4c42e43d61d762229d1b6dd6bd13f

SHA512
05ba2c3d4517439995e34ecab1f3ca813243bda5af01adabd038903741d749ee84cc5a674ea6a4c69b1a50e33a2331ee3a72cf1e5fa59aed0fead49b956491f5

Download Submit
C:\Users\Admin\AppData\Roaming\F371D\D331.371

Filesize
600B

MD5
51f9199a9986270d3e84c76593c00c07

SHA1
bf831ee686609af2c51c4e74438ab463e687920e

SHA256
384effa6e4f3d27ba796b772ed3da2f565a8cc428fb4e61f3fd33d98433db569

SHA512
df2ba657c5b16d3ba25c10dd3f9e0bb01bdb39bda1ea486d774080797b744c40b7f2ce82a9c22d787c408b6527f2130c5e4f91794a2334f9d6e9eb56014907e9

Download Submit
C:\Users\Admin\AppData\Roaming\F371D\D331.371

Filesize
996B

MD5
6694a03067d47aa8496c5f7db407f7b8

SHA1
02876bdc52cf22b3b5ef253d1c3e52e2d8e979cd

SHA256
0c9c0b71f6c4e60bd58052de430a5c2c4467ec7477f20a4ba95fb6a941d4cce8

SHA512
37dca447ca064ab7e085e843ef8154b84721a9b5d1858b6582968e5cd7768f58d72974c823d463c717e987a5e0ddf8b3fe4d7b39b3c82f91ffb49dfa6cf7287a

Download Submit
memory/2292-86-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2292-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2292-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2292-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/2292-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2292-182-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4616-88-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4616-89-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4616-91-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/5044-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads