colibri | ed28743bfc1a8f95a95e5c6fee5597d6961e497413d8e9b3544588ae7484f3f4

General

Target

ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe
Size

492KB
MD5

81d3017db518b0b252fbc291a5c7d992
SHA1

e05a2679511cc7d307c79b3170f9e8baaf87babc
SHA256

ed28743bfc1a8f95a95e5c6fee5597d6961e497413d8e9b3544588ae7484f3f4
SHA512

e9380fad8c17727c692c4c661e473be836010d4d456af7a8bb2999153a3c26735e080fa6274a62d2634b0510ecfe4eb4e656234eca2f4a9a03575d959a9cc6bb
SSDEEP

12288:gOfPr+8CHzhgAOt0AcfAWV5CRbdjNA98wl:hfz+NThghUAWVMRRjNJ

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 2 IoCs

pid	Process
4744	tmpBB56.tmp.exe
2208	tmpBB56.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.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

description	pid	Process	procid_target
PID 4744 set thread context of 2208	4744	tmpBB56.tmp.exe	85

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

pid	Process
4844	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4744	4844	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	83
PID 4844 wrote to memory of 4744	4844	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	83
PID 4844 wrote to memory of 4744	4844	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	83
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85
PID 4744 wrote to memory of 2208	4744	tmpBB56.tmp.exe	85

C:\Users\Admin\AppData\Local\Temp\ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe
"C:\Users\Admin\AppData\Local\Temp\ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4744
- - C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe"
    3⤵
    - Executes dropped EXE
    PID:2208

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBB56.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
memory/2208-143-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2208-141-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4844-136-0x0000000002B90000-0x0000000002BCC000-memory.dmp

Filesize
240KB

Download
memory/4844-132-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/4844-135-0x0000000002B30000-0x0000000002B42000-memory.dmp

Filesize
72KB

Download
memory/4844-134-0x000000001B9D0000-0x000000001BADA000-memory.dmp

Filesize
1.0MB

Download
memory/4844-133-0x00007FFFE81E0000-0x00007FFFE8CA1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-144-0x000000001C1E0000-0x000000001C256000-memory.dmp

Filesize
472KB

Download
memory/4844-145-0x000000001B580000-0x000000001B59E000-memory.dmp

Filesize
120KB

Download
memory/4844-146-0x000000001C830000-0x000000001C9F2000-memory.dmp

Filesize
1.8MB

Download
memory/4844-147-0x000000001CF30000-0x000000001D458000-memory.dmp

Filesize
5.2MB

Download
memory/4844-148-0x000000001C6F0000-0x000000001C740000-memory.dmp

Filesize
320KB

Download
memory/4844-149-0x00007FFFE81E0000-0x00007FFFE8CA1000-memory.dmp

Filesize
10.8MB

Download
memory/4844-150-0x00007FFFE81E0000-0x00007FFFE8CA1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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