colibri | 1579a9fa0f89cae6b7eb9d7af508959b32cd05b00091744ac1b0fff61ab91d79

General

Target

file.exe
Size

508KB
MD5

3907564e810a21f65284e0695cda199a
SHA1

f606b9a56887244e6ee5888e1fde324e9bbe23cb
SHA256

1579a9fa0f89cae6b7eb9d7af508959b32cd05b00091744ac1b0fff61ab91d79
SHA512

9fb62510ddf7bdf41afc692d5264f39e9afc100ca325b084764a1eadb4b00660148965dedc711b53c916a28d7b24e327cf2fb884cad660de7785e91c85c3d4f2
SSDEEP

12288:T6MFe3Y+yMT529YNZn+yR9VBNMTzwZU87m:T6Ie3YLMUONJBIzwZU8C

Score

10^/10

colibri build1 discovery loader spyware stealer

Malware Config

Extracted

Family

colibri

Version

1.2.0

Botnet

Build1

C2

http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php

http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php

Signatures

Colibri Loader
A loader sold as MaaS first seen in August 2021.
loader colibri
Executes dropped EXE 3 IoCs

Processes:

tmp89A7.tmp.exetmp89A7.tmp.exetmp89A7.tmp.exe

pid process

1680 tmp89A7.tmp.exe
1776 tmp89A7.tmp.exe
4372 tmp89A7.tmp.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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
Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp89A7.tmp.exe

description pid process target process

PID 1776 set thread context of 4372 1776 tmp89A7.tmp.exe tmp89A7.tmp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

file.exe

pid process

1584 file.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

file.exe

description pid process

Token: SeDebugPrivilege 1584 file.exe

pid	process
1680	tmp89A7.tmp.exe
1776	tmp89A7.tmp.exe
4372	tmp89A7.tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

description	pid	process	target process
PID 1776 set thread context of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe

pid	process
1584	file.exe

description	pid	process
Token: SeDebugPrivilege	1584	file.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

file.exetmp89A7.tmp.exetmp89A7.tmp.exe

description	pid	process	target process
PID 1584 wrote to memory of 1680	1584	file.exe	tmp89A7.tmp.exe
PID 1584 wrote to memory of 1680	1584	file.exe	tmp89A7.tmp.exe
PID 1584 wrote to memory of 1680	1584	file.exe	tmp89A7.tmp.exe
PID 1680 wrote to memory of 1776	1680	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1680 wrote to memory of 1776	1680	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1680 wrote to memory of 1776	1680	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe
PID 1776 wrote to memory of 4372	1776	tmp89A7.tmp.exe	tmp89A7.tmp.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584

C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1680

C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1776

C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe"
4⤵
- Executes dropped EXE
PID:4372

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp89A7.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
memory/1584-149-0x000000001DB00000-0x000000001DB76000-memory.dmp

Filesize
472KB

Download
memory/1584-151-0x000000001ED00000-0x000000001EEC2000-memory.dmp

Filesize
1.8MB

Download
memory/1584-136-0x0000000002A30000-0x0000000002A6C000-memory.dmp

Filesize
240KB

Download
memory/1584-135-0x00000000010F0000-0x0000000001102000-memory.dmp

Filesize
72KB

Download
memory/1584-155-0x00007FFBDBAF0000-0x00007FFBDC5B1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-154-0x000000001EBC0000-0x000000001EC10000-memory.dmp

Filesize
320KB

Download
memory/1584-134-0x000000001D170000-0x000000001D27A000-memory.dmp

Filesize
1.0MB

Download
memory/1584-153-0x00007FFBDBAF0000-0x00007FFBDC5B1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-152-0x000000001F400000-0x000000001F928000-memory.dmp

Filesize
5.2MB

Download
memory/1584-133-0x00007FFBDBAF0000-0x00007FFBDC5B1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-150-0x000000001DAC0000-0x000000001DADE000-memory.dmp

Filesize
120KB

Download
memory/1584-132-0x00000000007C0000-0x0000000000842000-memory.dmp

Filesize
520KB

Download
memory/1680-137-0x0000000000000000-mapping.dmp

Download
memory/1680-140-0x0000000000C31000-0x0000000000C34000-memory.dmp

Filesize
12KB

Download
memory/1776-141-0x0000000000000000-mapping.dmp

Download
memory/4372-148-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4372-146-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4372-145-0x0000000000000000-mapping.dmp

Download

Analysis

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