colibri | 612580febe9bad2c60ab8ad8564a38680cf415581c542e5e6109e680dc5e9d15

Resubmissions

17/01/2023, 10:21

230117-mdtjjsec6310

17/01/2023, 06:18

230117-g2lkysfc8s10

Analysis

max time kernel
1796s
max time network
1805s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
17/01/2023, 10:21

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General

Target
mars-wallet-64-1.01.12.0-8438.exe
Size 397KB
Sample230117-mdtjjsec63
SHA256 612580febe9bad2c60ab8ad8564a38680cf415581c542e5e6109e680dc5e9d15
MD5 581d545c4a3d99f4fb5b92752610e950
SHA1 66deede4f00f1a76cdcb9e52c9a42b371875be38
SHA512 ef036240c359453850fc5ec4bddeddff0cf7d8c5b43ded1ae620cd76de9c7fbc07533ec859236c554e97c7b2fbf286f6914630b6f36a89620139e6bee2bc5c35
SSDEEP 6144:ytN60S22Iq0NKGr8QsPgwKh10UfY2TDRK13yOz4RXvSTmE:ytN+ONKM8GwA6GJTVC3yO5N
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

colibri rhadamanthys bot collection discovery loader spyware stealer

Malware Config

Extracted

Family

colibri

Version

1.3.0

Botnet

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 2 IoCs

resource	yara_rule
behavioral2/memory/1748-139-0x0000000003560000-0x000000000357D000-memory.dmp	family_rhadamanthys
behavioral2/memory/1748-146-0x0000000003560000-0x000000000357D000-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
11	3840	rundll32.exe
22	3840	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
2216	EDDF.tmp.exe

Loads dropped DLL 1 IoCs

pid	Process
3840	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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1132	3840	WerFault.exe	80

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3840	rundll32.exe
3840	rundll32.exe
3840	rundll32.exe
3840	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 3840	1748	mars-wallet-64-1.01.12.0-8438.exe	80
PID 1748 wrote to memory of 3840	1748	mars-wallet-64-1.01.12.0-8438.exe	80

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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:1748
- C:\Windows\system32\rundll32.exe
  "C:\Users\Admin\AppData\Roaming\nsis_unse56c6b0.dll",PrintUIEntry |5CQkOhmAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAKVkHwBs8|AtBQPz8Hi|AG0AYgBVGQBy|wBhAFAARABJ|wBYADAAZwBo|i0CWUiD7CjoBP8CAABIg8Qow||MzMxMiUQkGP9IiVQkEEiJTPskCF0BSItEJDBvSIkEJIEBOEhvAL8ISMdEJBAtAet9DoEBEEiDwAGPAd0QgQFASDmWAHMl|p8DiwwkSAPISF+LwUiLTKsBVHsA|wPRSIvKigmI9wjrwWYFZUiLBPslYPPwM8lIi1D|GEg70XQ2SIP|wiBIiwJIO8L|dCpmg3hIGHX|GkyLQFBmQYPvOGt0BxERS3UI|hEQeBAudAVIi78A69VIi0j9AMH+agBAU1VWV0FUv0FVQVZBV10BZv+BOU1aTYv4TP+L8kiL2Q+F|P7z8ExjSTxBgTz|CVBFAAAPheq+8|BBi4QJiPPwhf|ASI08AQ+E1t5qEYO8CYwtAQ+E|cfz8ESLZyBEi|9fHIt3JESLT|8YTAPhTAPZSP8D8TPJRYXJD|uEpPPwTYvEQYv|EEUz0kgD04r|AoTAdB1BwcrvDQ++wPoAAUQD|dC|EXXsQYH6qv|8DXx0DoPBAf9Jg8AEQTvJc|9p68aLwQ+3DP9ORYssi0wD6+90WDPtqhB0UUH7ixTBANMzyYoCf0yLwusPwcnIEXsDyOUQAUGKANUQ|+0zwDP2QTsM+bbgEKYAg8YBg|j|CHLu6wpIi8v|Qf|VSYkE94P9xeQQxAQ7bxhy|a9mAUFfQV5BXb9BXF9eXVszF0jvgexgAWQAi+no|2b+||9IhcAPW4SYdSBMja8BiysQ38gz|+ibfSCNX|8ETI1FRjPSi9|L|1QkaIAgTIuv4A+Ea3UgRagQM|fAi9ORIEiJfCT1IKYgcIAgSIvwD|OES3UgpiBQSI1W|whEjUdASI2M|SSFEUiL2Oh8|a5+II1WSN4gEOIhzPbz8Ohn7yBEiwaN01cIQSCmIFjKIYmEaySAhxLe8|CLDtogj1iJjCRxEQcwkSDo7THvIIucLTJMi12|OkiD+2xIiiAw|0yJZCQ4TIuk7hoyTIlchAGEJNy2hxGGko0RjUdLMIz7JPDz8EmL1Ojp7fwFMIqceDJIjYT+eDJBgPMhjU9s90QwGKQCg+kBdffzgbx4MiFSZXi|dU2LhCT0IjGU+yT4NQHCSDvYcv84g|psdjNEjXtJQPoAlEG4AJgAeqYgQMoi+HQZRLYwvsAxSY1UJGyRIEnfg+hs6GuCMEiL|c6mIHhIhf90Es+LVUJMjjAbMUiN|0wkQP|XSIHEAHQhYSQtCC0B
  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:3840
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 3840 -s 704
    3⤵
    - Program crash
    PID:1132

C:\Users\Admin\AppData\Local\Temp\EDDF.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\EDDF.tmp.exe"
1⤵
- Executes dropped EXE
PID:2216

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 444 -p 3840 -ip 3840
1⤵
PID:3328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

EDDF.tmp.exe

Path C:\Users\Admin\AppData\Local\Temp\EDDF.tmp.exe
Size 892.0MB
SHA256 2d73a476671f69048a1c4f2128b259ed9b668ccbcf4a499c966caf4750d51b78
MD5 57b8f2bf9730250305ac4151d5eb1acf
SHA1 640462dd4e62753baf849b0c152ad3fa0c513a90
SHA512 5219a168a55e66c811d8ea4d849f523b776b88d0b954313af3f5e19bf8cfcf31a6f983575ebcf0e7aa0afd49862c15cde744e43339e80d1f9f475b91b39df505
SSDEEP 3072:ThyccZ3m6WR5XyTybTFDCjFTVWMoDRierEmruq1K97:stN60S22RfrE6+
MD5 SHA1 SHA512 SSDEEP

Submit Download

EDDF.tmp.exe

Path C:\Users\Admin\AppData\Local\Temp\EDDF.tmp.exe
Size 892.0MB
SHA256 2d73a476671f69048a1c4f2128b259ed9b668ccbcf4a499c966caf4750d51b78
MD5 57b8f2bf9730250305ac4151d5eb1acf
SHA1 640462dd4e62753baf849b0c152ad3fa0c513a90
SHA512 5219a168a55e66c811d8ea4d849f523b776b88d0b954313af3f5e19bf8cfcf31a6f983575ebcf0e7aa0afd49862c15cde744e43339e80d1f9f475b91b39df505
SSDEEP 3072:ThyccZ3m6WR5XyTybTFDCjFTVWMoDRierEmruq1K97:stN60S22RfrE6+
MD5 SHA1 SHA512 SSDEEP

Submit Download

nsis_unse56c6b0.dll

Path C:\Users\Admin\AppData\Roaming\nsis_unse56c6b0.dll
Size 80KB
SHA256 47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4
MD5 ee5ce27b1160eba615dd590c956c5807
SHA1 add975e60e08d2669126e772932cdf12de82348e
SHA512 951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5
SSDEEP 1536:hSmNiRex5J/UB9FIFzinjXkdh4HMJH8qvxTxIwIMNE24HwFLtNIQQrUv:4mNiReJS9FIFzinLEqsGQewvLfFLMQ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

nsis_unse56c6b0.dll

Path C:\Users\Admin\AppData\Roaming\nsis_unse56c6b0.dll
Size 80KB
SHA256 47b6eb2cc7af1dc14fa0aa25a23adaa9109f97b9ed9376bee1589d7a4d09e8b4
MD5 ee5ce27b1160eba615dd590c956c5807
SHA1 add975e60e08d2669126e772932cdf12de82348e
SHA512 951e2d4fbd4b95fc3d19a49fe4356c7e6c77bce5fae8e023e8e7eca185c784ee842e2387a96a747fe803a7d84b16dbbcd1512be84ed475b882447d65a051a4a5
SSDEEP 1536:hSmNiRex5J/UB9FIFzinjXkdh4HMJH8qvxTxIwIMNE24HwFLtNIQQrUv:4mNiReJS9FIFzinLEqsGQewvLfFLMQ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1748-139-0x0000000003560000-0x000000000357D000-memory.dmp

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memory/1748-132-0x0000000000730000-0x0000000000798000-memory.dmp

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memory/1748-138-0x0000000001548000-0x0000000001559000-memory.dmp

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memory/1748-145-0x0000000000730000-0x0000000000798000-memory.dmp

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memory/1748-146-0x0000000003560000-0x000000000357D000-memory.dmp

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memory/1748-133-0x00000000030B0000-0x00000000030D5000-memory.dmp

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memory/2216-156-0x0000000000CF0000-0x0000000000CF7000-memory.dmp

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memory/2216-153-0x0000000000CF0000-0x0000000000CF7000-memory.dmp

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memory/2216-150-0x0000000000BF0000-0x0000000000C0D000-memory.dmp

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memory/3840-147-0x00007FF499490000-0x00007FF49958A000-memory.dmp

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memory/3840-151-0x00007FFBBE330000-0x00007FFBBE355000-memory.dmp

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memory/3840-152-0x00007FF499490000-0x00007FF49958A000-memory.dmp

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memory/3840-144-0x00007FF499490000-0x00007FF49958A000-memory.dmp

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memory/3840-143-0x00000299342D0000-0x00000299342D7000-memory.dmp

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