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 upx

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 5 IoCs

pid	Process
2576	tmpDB22.tmp.exe
2476	tmpDB22.tmp.exe
1652	tmpDB22.tmp.exe
1308	tmpDB22.tmp.exe
3440	loader.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0002000000022dfb-158.dat	upx
behavioral2/files/0x0002000000022dfb-159.dat	upx
behavioral2/memory/3440-161-0x0000000000690000-0x0000000001936000-memory.dmp	upx
behavioral2/memory/3440-162-0x0000000000690000-0x0000000001936000-memory.dmp	upx
behavioral2/memory/3440-167-0x0000000000690000-0x0000000001936000-memory.dmp	upx

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 1652 set thread context of 1308	1652	tmpDB22.tmp.exe	86

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 3 IoCs

pid	Process
816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe
656	powershell.exe
656	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe
Token: SeDebugPrivilege	656	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 2576	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	82
PID 816 wrote to memory of 2576	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	82
PID 816 wrote to memory of 2576	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	82
PID 2576 wrote to memory of 2476	2576	tmpDB22.tmp.exe	84
PID 2576 wrote to memory of 2476	2576	tmpDB22.tmp.exe	84
PID 2576 wrote to memory of 2476	2576	tmpDB22.tmp.exe	84
PID 2476 wrote to memory of 1652	2476	tmpDB22.tmp.exe	85
PID 2476 wrote to memory of 1652	2476	tmpDB22.tmp.exe	85
PID 2476 wrote to memory of 1652	2476	tmpDB22.tmp.exe	85
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 1652 wrote to memory of 1308	1652	tmpDB22.tmp.exe	86
PID 816 wrote to memory of 3440	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	93
PID 816 wrote to memory of 3440	816	ED28743BFC1A8F95A95E5C6FEE5597D6961E497413D8E.exe	93
PID 3440 wrote to memory of 656	3440	loader.exe	95
PID 3440 wrote to memory of 656	3440	loader.exe	95

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:816
- C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2476
  - - C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:1652
    - - C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe
        
        "C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe"
        5⤵
        Executes dropped EXE
        
        PID:1308
- C:\Users\Admin\AppData\Roaming\loader.exe
  "C:\Users\Admin\AppData\Roaming\loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3440
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell "" "Get-WmiObject Win32_PortConnector"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:656

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\tmpDB22.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB22.tmp.exe

Filesize
74KB

MD5
cdd3d44d9e64a113618961f0a4e691b9

SHA1
a762037bc50ddb7507d5ef1a20ce813ad990bb54

SHA256
dbeb4b5ef3a49b4df0bc816a52f875e5aa6ad674aa8e2b458e9736da0b366ec0

SHA512
55146e6464bf74266520341fae0b097ddfea1d6ed7fadf7e0dcf0eba7ac1c29384ad76f245994ea69f68dc85cdcdcb9fc4a2a1eede5db95001dbcd870505a3d8

Download Submit
C:\Users\Admin\AppData\Roaming\loader.exe

Filesize
5.1MB

MD5
f505b027e7d5da22ee6f4b9d3fb35978

SHA1
57931a188c5bcdfaeab508598574a3e2113b6495

SHA256
8860992a5b56bbeb6e67d208b1e3ba37b7795bcaee9b21f12bbc8c09862585e5

SHA512
7cd0b37bca9a19e9f5834c8dfe8d11eedbde370f1ea430632e6c7006deb7ab9352fb4616bc7293a156cfc5bd0b49c3d9e643ab3780b897bcf3fe8a09468c5c45

Download Submit
C:\Users\Admin\AppData\Roaming\loader.exe

Filesize
5.1MB

MD5
f505b027e7d5da22ee6f4b9d3fb35978

SHA1
57931a188c5bcdfaeab508598574a3e2113b6495

SHA256
8860992a5b56bbeb6e67d208b1e3ba37b7795bcaee9b21f12bbc8c09862585e5

SHA512
7cd0b37bca9a19e9f5834c8dfe8d11eedbde370f1ea430632e6c7006deb7ab9352fb4616bc7293a156cfc5bd0b49c3d9e643ab3780b897bcf3fe8a09468c5c45

Download Submit
memory/656-165-0x00007FFE18DE0000-0x00007FFE198A1000-memory.dmp

Filesize
10.8MB

Download
memory/656-164-0x0000021514240000-0x0000021514262000-memory.dmp

Filesize
136KB

Download
memory/656-166-0x00007FFE18DE0000-0x00007FFE198A1000-memory.dmp

Filesize
10.8MB

Download
memory/816-135-0x000000001B090000-0x000000001B0A2000-memory.dmp

Filesize
72KB

Download
memory/816-160-0x00007FFE18DE0000-0x00007FFE198A1000-memory.dmp

Filesize
10.8MB

Download
memory/816-134-0x00007FFE18DE0000-0x00007FFE198A1000-memory.dmp

Filesize
10.8MB

Download
memory/816-136-0x000000001B0F0000-0x000000001B12C000-memory.dmp

Filesize
240KB

Download
memory/816-155-0x000000001E5E0000-0x000000001E7A2000-memory.dmp

Filesize
1.8MB

Download
memory/816-156-0x000000001ECE0000-0x000000001F208000-memory.dmp

Filesize
5.2MB

Download
memory/816-133-0x000000001C0B0000-0x000000001C1BA000-memory.dmp

Filesize
1.0MB

Download
memory/816-132-0x00000000003B0000-0x0000000000432000-memory.dmp

Filesize
520KB

Download
memory/816-151-0x000000001D400000-0x000000001D476000-memory.dmp

Filesize
472KB

Download
memory/816-152-0x000000001D3B0000-0x000000001D3CE000-memory.dmp

Filesize
120KB

Download
memory/816-153-0x00007FFE18DE0000-0x00007FFE198A1000-memory.dmp

Filesize
10.8MB

Download
memory/816-154-0x000000001D4E0000-0x000000001D530000-memory.dmp

Filesize
320KB

Download
memory/1308-150-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1308-148-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1652-146-0x0000000000794000-0x0000000000797000-memory.dmp

Filesize
12KB

Download
memory/2476-143-0x00000000008D4000-0x00000000008D7000-memory.dmp

Filesize
12KB

Download
memory/2576-140-0x00000000010E0000-0x00000000010E3000-memory.dmp

Filesize
12KB

Download
memory/3440-161-0x0000000000690000-0x0000000001936000-memory.dmp

Filesize
18.6MB

Download
memory/3440-162-0x0000000000690000-0x0000000001936000-memory.dmp

Filesize
18.6MB

Download
memory/3440-167-0x0000000000690000-0x0000000001936000-memory.dmp

Filesize
18.6MB

Download

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