colibri | 612580febe9bad2c60ab8ad8564a38680cf415581c542e5e6109e680dc5e9d15

General

Target

mars-wallet-64-1.01.12.0-8438.exe
Size

397KB
MD5

581d545c4a3d99f4fb5b92752610e950
SHA1

66deede4f00f1a76cdcb9e52c9a42b371875be38
SHA256

612580febe9bad2c60ab8ad8564a38680cf415581c542e5e6109e680dc5e9d15
SHA512

ef036240c359453850fc5ec4bddeddff0cf7d8c5b43ded1ae620cd76de9c7fbc07533ec859236c554e97c7b2fbf286f6914630b6f36a89620139e6bee2bc5c35
SSDEEP

6144:ytN60S22Iq0NKGr8QsPgwKh10UfY2TDRK13yOz4RXvSTmE:ytN+ONKM8GwA6GJTVC3yO5N

Score

10^/10

colibri rhadamanthys bot collection discovery loader spyware stealer

Malware Config

Extracted

Family

colibri

Version

1.3.0

Botnet

bot

C2

http://176.113.115.240/gate.php

rc4.plain

Signatures

Colibri Loader
A loader sold as MaaS first seen in August 2021.
loader colibri

Detect rhadamanthys stealer shellcode 1 IoCs

resource	yara_rule
behavioral1/memory/1744-64-0x0000000000500000-0x000000000051D000-memory.dmp	family_rhadamanthys

Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
stealer rhadamanthys

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	1476	rundll32.exe
3	1476	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
1652	6FE3.tmp.exe

Loads dropped DLL 4 IoCs

pid	Process
1476	rundll32.exe
1476	rundll32.exe
1476	rundll32.exe
1476	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1476	rundll32.exe
1476	rundll32.exe
1476	rundll32.exe
1476	rundll32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1476	1744	mars-wallet-64-1.01.12.0-8438.exe	28
PID 1744 wrote to memory of 1476	1744	mars-wallet-64-1.01.12.0-8438.exe	28
PID 1744 wrote to memory of 1476	1744	mars-wallet-64-1.01.12.0-8438.exe	28
PID 1744 wrote to memory of 1476	1744	mars-wallet-64-1.01.12.0-8438.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\mars-wallet-64-1.01.12.0-8438.exe
"C:\Users\Admin\AppData\Local\Temp\mars-wallet-64-1.01.12.0-8438.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\system32\rundll32.exe
  "C:\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll",PrintUIEntry |5CQkOhmAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAKVkHwBs8|AtBQPz8EH|AG0AUQBDADX+IwAwAHQAagBjuwA5TwBBAEktAln|SIPsKOgEAgD|AEiDxCjDzMz|zEyJRCQYSIn|VCQQSIlMJAj+XQFIi0QkMEiJ2wQkgQE4SG8ACEhvx0QkEC0B6w6BAV8QSIPAAY8BEIEBt0BIOZYAcyWfA4v|DCRIA8hIi8HXSItMqwFUewAD0f9Ii8qKCYgI6|3BZgVlSIsEJWD+8|AzyUiLUBhI|zvRdDZIg8Ig|0iLAkg7wnQq|2aDeEgYdRpM|4tAUGZBgzhru3QHERFLdQgREHj|EC50BUiLAOuv1UiLSP0AwWoAQP9TVVZXQVRBVe9BVkFXXQFmgTn|TVpNi|hMi|K|SIvZD4X88|BM|2NJPEGBPAlQv0UAAA+F6jkBi|eECYjz8IXASI3fPAEPhNY5AYO8uwmMLQEPhMfz8ET|i2cgRItfHIv|dyREi08YTAP|4UwD2UgD8TN|yUWFyQ+EpPPw|02LxEGLEEUz|9JIA9OKAoTA|3QdQcHKDQ++vcD6AAFEA9C|EXX|7EGB+qr8DXz|dA6DwQFJg8D|BEE7yXNp68b|i8EPtwxORYv|LItMA+t0WDN97aoQdFFBixTBAP|TM8mKAkyLwm|rD8HJyBEDyOUQ7wFBigDVEO0zwD8z9kE7DLbgEKYA|4PGAYP4CHLu|+sKSIvLQf|Vv0mJBPeDxeQQxL8EO28Ycq9mAUH|X0FeQV1BXF|3Xl1bMxdIgexg|QFkAIvp6Gb+|3||SIXAD4SYdSDrTI2vAYsrEMgz||vom30gjV8ETI3|RUYz0ovL|1T7JGiAIEyL4A+E9Wt1IEWoEDPAi9O+kSBIiXwkIKYgcH6AIEiL8A+ES3Ug|qYgUEiNVghEjb9HQEiNjCSFEUjfi9jofP1+II1W1UjeIBDiIczz8Ohnfu8gRIsGjVcIQSB6piBYyiGJhCSAhxLt3vPwiw7aIFiJjLEkcREHMJEg6DHvIIv9nC0yTItdOkiD9|tsSIogMEyJZN8kOEyLpBoyTIndXIQBhCTchxGGknaNEY1HSzCMJPDz8L9Ji9To6fwFMIrdnHgySI2EeDJBgP|zIY1PbEQwGP6kAoPpAXXzgbz+eDIhUmV4dU2Ld4Qk9CIxlCT4NQH|wkg72HI4g|p|bHYzRI1JQPoAT5RBuACYAKYgQMoiz|h0GUS2MMAxSY33VCRskSBJg+hsu+hrgjBIi86mIHj|SIX|dBKLVUL5TI4wGzFIjUwkQB||10iBxHQhYSQtCAAtAQ==
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - outlook_office_path
  - outlook_win_path
  PID:1476

C:\Users\Admin\AppData\Local\Temp\6FE3.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\6FE3.tmp.exe"
1⤵
- Executes dropped EXE
PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\6FE3.tmp.exe

Filesize
892.0MB

MD5
57b8f2bf9730250305ac4151d5eb1acf

SHA1
640462dd4e62753baf849b0c152ad3fa0c513a90

SHA256
2d73a476671f69048a1c4f2128b259ed9b668ccbcf4a499c966caf4750d51b78

SHA512
5219a168a55e66c811d8ea4d849f523b776b88d0b954313af3f5e19bf8cfcf31a6f983575ebcf0e7aa0afd49862c15cde744e43339e80d1f9f475b91b39df505

Download Submit
C:\Users\Admin\AppData\Local\Temp\6FE3.tmp.exe

Filesize
892.0MB

MD5
57b8f2bf9730250305ac4151d5eb1acf

SHA1
640462dd4e62753baf849b0c152ad3fa0c513a90

SHA256
2d73a476671f69048a1c4f2128b259ed9b668ccbcf4a499c966caf4750d51b78

SHA512
5219a168a55e66c811d8ea4d849f523b776b88d0b954313af3f5e19bf8cfcf31a6f983575ebcf0e7aa0afd49862c15cde744e43339e80d1f9f475b91b39df505

Download Submit
C:\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
\Users\Admin\AppData\Roaming\nsis_uns6c4941.dll

Filesize
80KB

MD5
ee5ce27b1160eba615dd590c956c5807

SHA1
add975e60e08d2669126e772932cdf12de82348e

SHA256
47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4

SHA512
951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5

Download Submit
memory/1476-76-0x000007FFFFEB0000-0x000007FFFFFAA000-memory.dmp

Filesize
1000KB

Download
memory/1476-71-0x000007FFFFEB0000-0x000007FFFFFAA000-memory.dmp

Filesize
1000KB

Download
memory/1476-77-0x000007FEFAB10000-0x000007FEFAB35000-memory.dmp

Filesize
148KB

Download
memory/1476-75-0x000007FFFFEB0000-0x000007FFFFFAA000-memory.dmp

Filesize
1000KB

Download
memory/1476-70-0x00000000000A0000-0x00000000000A7000-memory.dmp

Filesize
28KB

Download
memory/1652-74-0x0000000000AF0000-0x0000000000B0D000-memory.dmp

Filesize
116KB

Download
memory/1652-79-0x0000000000AF0000-0x0000000000B0D000-memory.dmp

Filesize
116KB

Download
memory/1652-80-0x0000000000230000-0x0000000000237000-memory.dmp

Filesize
28KB

Download
memory/1652-84-0x0000000000230000-0x0000000000237000-memory.dmp

Filesize
28KB

Download
memory/1744-72-0x00000000000C0000-0x0000000000128000-memory.dmp

Filesize
416KB

Download
memory/1744-60-0x00000000000C0000-0x0000000000128000-memory.dmp

Filesize
416KB

Download
memory/1744-64-0x0000000000500000-0x000000000051D000-memory.dmp

Filesize
116KB

Download
memory/1744-61-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/1744-54-0x00000000000C0000-0x0000000000128000-memory.dmp

Filesize
416KB

Download
memory/1744-63-0x000000000080B000-0x000000000081D000-memory.dmp

Filesize
72KB

Download
memory/1744-55-0x00000000001D0000-0x00000000001F5000-memory.dmp

Filesize
148KB

Download

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