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
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

tmp126F.tmp.exetmp126F.tmp.exe

pid process

4756 tmp126F.tmp.exe
4512 tmp126F.tmp.exe

pid	process
4756	tmp126F.tmp.exe
4512	tmp126F.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:

ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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

Processes:

tmp126F.tmp.exe

description pid process target process

PID 4756 set thread context of 4512 4756 tmp126F.tmp.exe tmp126F.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:

ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

pid process

2556 ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

description pid process

Token: SeDebugPrivilege 2556 ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

description	pid	process	target process
PID 4756 set thread context of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe

pid	process
2556	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

description	pid	process
Token: SeDebugPrivilege	2556	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exetmp126F.tmp.exe

description	pid	process	target process
PID 2556 wrote to memory of 4756	2556	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	tmp126F.tmp.exe
PID 2556 wrote to memory of 4756	2556	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	tmp126F.tmp.exe
PID 2556 wrote to memory of 4756	2556	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe
PID 4756 wrote to memory of 4512	4756	tmp126F.tmp.exe	tmp126F.tmp.exe

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:2556

C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4756

C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe"
3⤵
- Executes dropped EXE
PID:4512

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\tmp126F.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp126F.tmp.exe
Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
memory/2556-147-0x000000001C3B0000-0x000000001C3CE000-memory.dmp

Filesize
120KB

Download
memory/2556-146-0x000000001CC60000-0x000000001CCD6000-memory.dmp

Filesize
472KB

Download
memory/2556-137-0x000000001CCE0000-0x000000001CD1C000-memory.dmp

Filesize
240KB

Download
memory/2556-150-0x000000001CD80000-0x000000001CDD0000-memory.dmp

Filesize
320KB

Download
memory/2556-149-0x000000001E510000-0x000000001EA38000-memory.dmp

Filesize
5.2MB

Download
memory/2556-133-0x00007FFFDEE70000-0x00007FFFDF931000-memory.dmp

Filesize
10.8MB

Download
memory/2556-136-0x000000001B630000-0x000000001B642000-memory.dmp

Filesize
72KB

Download
memory/2556-148-0x000000001DE10000-0x000000001DFD2000-memory.dmp

Filesize
1.8MB

Download
memory/2556-134-0x00007FFFDEE70000-0x00007FFFDF931000-memory.dmp

Filesize
10.8MB

Download
memory/2556-132-0x0000000000990000-0x0000000000A12000-memory.dmp

Filesize
520KB

Download
memory/2556-135-0x000000001CDF0000-0x000000001CEFA000-memory.dmp

Filesize
1.0MB

Download
memory/4512-145-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4512-142-0x0000000000000000-mapping.dmp

Download
memory/4512-143-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/4756-141-0x0000000000F71000-0x0000000000F74000-memory.dmp

Filesize
12KB

Download
memory/4756-138-0x0000000000000000-mapping.dmp

Download

Analysis

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