colibri | 6c4c03231ed003e73fd65691c5950ae75f352e8467a486ea3ae34307ba35c297

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2023 14:59

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General

Target

file.exe
Size

447KB
MD5

c6370fd9fec5500a8eb3a0c6a7cb9999
SHA1

ce87cba0d983f1d85e3a65a0351b4b5d15da31b4
SHA256

6c4c03231ed003e73fd65691c5950ae75f352e8467a486ea3ae34307ba35c297
SHA512

0c73a811203a65e5bdb3c0ff68beb4189d0410b6976331aaf97804d802eec7f31470c0b5d78443546d6ee69e856f9abc671875b3fca83d394e288370e586a774
SSDEEP

6144:bHpSbEF2KIXm7atCYbzMrBsE10PF86tv77exdj0W8+E8INlWZWneknqi7oH:b4bEKWO4YMNmjvaj0MELNlkknqiU

Score

10^/10

colibri bot collection loader

Malware Config

Extracted

Family

colibri

Version

1.4.1

Botnet

bot

http://oraycdn.com/gate.php

rc4.plain

Signatures

Colibri Loader
A loader sold as MaaS first seen in August 2021.
loader colibri

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1132 created 3116	1132	file.exe	50

Executes dropped EXE 3 IoCs

pid	Process
2392	giXgg8$xKW.exe
4660	dllhost.exe
8	dllhost.exe

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	certreq.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	certreq.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	certreq.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	certreq.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	certreq.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	certreq.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
1356	1132	WerFault.exe	82
3404	2392	WerFault.exe	94
872	8	WerFault.exe	99

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 opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	certreq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	certreq.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2808	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1132	file.exe
1132	file.exe
1132	file.exe
1132	file.exe
3944	certreq.exe
3944	certreq.exe
3944	certreq.exe
3944	certreq.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 3944	1132	file.exe	83
PID 1132 wrote to memory of 3944	1132	file.exe	83
PID 1132 wrote to memory of 3944	1132	file.exe	83
PID 1132 wrote to memory of 3944	1132	file.exe	83
PID 2392 wrote to memory of 2808	2392	giXgg8$xKW.exe	95
PID 2392 wrote to memory of 2808	2392	giXgg8$xKW.exe	95
PID 2392 wrote to memory of 2808	2392	giXgg8$xKW.exe	95
PID 2392 wrote to memory of 4660	2392	giXgg8$xKW.exe	96
PID 2392 wrote to memory of 4660	2392	giXgg8$xKW.exe	96
PID 2392 wrote to memory of 4660	2392	giXgg8$xKW.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	certreq.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	certreq.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3116
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1132
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 800
    3⤵
    - Program crash
    PID:1356
- C:\Windows\system32\certreq.exe
  "C:\Windows\system32\certreq.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - outlook_office_path
  - outlook_win_path
  PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 1132 -ip 1132
1⤵
PID:3600

C:\Users\Admin\AppData\Local\Microsoft\giXgg8$xKW.exe
"C:\Users\Admin\AppData\Local\Microsoft\giXgg8$xKW.exe"
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\SysWOW64\schtasks.exe
  /create /tn Bandicam /st 00:00 /du 9999:59 /sc once /ri 1 /f /tr "C:\Users\Admin\Documents\Bandicam\dllhost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2808
- C:\Users\Admin\Documents\Bandicam\dllhost.exe
  "C:\Users\Admin\Documents\Bandicam\dllhost.exe"
  2⤵
  - Executes dropped EXE
  PID:4660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 1596
  2⤵
  - Program crash
  PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2392 -ip 2392
1⤵
PID:4464

C:\Users\Admin\Documents\Bandicam\dllhost.exe
C:\Users\Admin\Documents\Bandicam\dllhost.exe
1⤵
- Executes dropped EXE
PID:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 352
  2⤵
  - Program crash
  PID:872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 8 -ip 8
1⤵
PID:392

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751

Filesize
717B

MD5
60fe01df86be2e5331b0cdbe86165686

SHA1
2a79f9713c3f192862ff80508062e64e8e0b29bd

SHA256
c08ccbc876cd5a7cdfa9670f9637da57f6a1282198a9bc71fc7d7247a6e5b7a8

SHA512
ef9f9a4dedcbfe339f4f3d07fb614645596c6f2b15608bdccdad492578b735f7cb075bdaa07178c764582ee345857ec4665f90342694e6a60786bb3d9b3a3d23

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1B1495DD322A24490E2BF2FAABAE1C61

Filesize
300B

MD5
dec6bbe308eb44937f77160a25ee32db

SHA1
8f08a4b641b564b67205e00106ca6bd9ca46fc6e

SHA256
68a71de28f488586c2b169f4652347e0a1fd632d48a6d6725393607bfa18bc7e

SHA512
6c2d684af52588cfd34a682337749b829c2336b34d6add7e8bd6e0c641862c26889617b4d6e9f298fd177b89527deb696c493a205ea8490bb8aee60090a68475

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751

Filesize
192B

MD5
7a4199e52a12b36258115b774eb981c0

SHA1
9d537f806b2070397783a02357302e1e564283de

SHA256
4a28d176cf636f5683c1dc7c205a07681b6c50024c78a79b25d59a6e7998c607

SHA512
9773624ae1b07dffe337e6c5b92308434490964f112461150049f85d9683998167d9b4ac93a84f80118b20b78a2e062bc7aa5489c872343e3ca539da556c55b1

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1B1495DD322A24490E2BF2FAABAE1C61

Filesize
192B

MD5
c71dd046c83be0d9571b5f983e0b4f92

SHA1
b848caf98e7a0e25017e12af7692db4d08d26e36

SHA256
47e3fb2c95fcaeca324ed7a4a7e5de83cb06f2097aff0ad38bab11be65a35f1d

SHA512
90e6beb88e043940f4401fbe6deefacad01c2d4d4e74378742c11e93c23fd00de05c301851671fc1d6a7625b22f65a07bcb8f36bbd30ff49ac746579d0862334

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\giXgg8$xKW.exe

Filesize
228KB

MD5
0149c8c0b3f822a07b229b0adc505f0f

SHA1
6eee43488d721b374adabc4243e647d59244f38e

SHA256
e114cd7d08b02c34f3612cade3bf5a9806fbb5eff4e0ee6d193799ce40b36d1c

SHA512
207dc2346c2e344dc1d6cdc068dae3a29dd377bd8b20ec5fc32c93916d8921362e7e55106110c150d6da4ce40313381f15e4c348d1b6af3e36cd2e4e43f80da9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\giXgg8$xKW.exe

Filesize
228KB

MD5
0149c8c0b3f822a07b229b0adc505f0f

SHA1
6eee43488d721b374adabc4243e647d59244f38e

SHA256
e114cd7d08b02c34f3612cade3bf5a9806fbb5eff4e0ee6d193799ce40b36d1c

SHA512
207dc2346c2e344dc1d6cdc068dae3a29dd377bd8b20ec5fc32c93916d8921362e7e55106110c150d6da4ce40313381f15e4c348d1b6af3e36cd2e4e43f80da9

Download Submit
C:\Users\Admin\Documents\Bandicam\dllhost.exe

Filesize
228KB

MD5
0149c8c0b3f822a07b229b0adc505f0f

SHA1
6eee43488d721b374adabc4243e647d59244f38e

SHA256
e114cd7d08b02c34f3612cade3bf5a9806fbb5eff4e0ee6d193799ce40b36d1c

SHA512
207dc2346c2e344dc1d6cdc068dae3a29dd377bd8b20ec5fc32c93916d8921362e7e55106110c150d6da4ce40313381f15e4c348d1b6af3e36cd2e4e43f80da9

Download Submit
C:\Users\Admin\Documents\Bandicam\dllhost.exe

Filesize
228KB

MD5
0149c8c0b3f822a07b229b0adc505f0f

SHA1
6eee43488d721b374adabc4243e647d59244f38e

SHA256
e114cd7d08b02c34f3612cade3bf5a9806fbb5eff4e0ee6d193799ce40b36d1c

SHA512
207dc2346c2e344dc1d6cdc068dae3a29dd377bd8b20ec5fc32c93916d8921362e7e55106110c150d6da4ce40313381f15e4c348d1b6af3e36cd2e4e43f80da9

Download Submit
C:\Users\Admin\Documents\Bandicam\dllhost.exe

Filesize
228KB

MD5
0149c8c0b3f822a07b229b0adc505f0f

SHA1
6eee43488d721b374adabc4243e647d59244f38e

SHA256
e114cd7d08b02c34f3612cade3bf5a9806fbb5eff4e0ee6d193799ce40b36d1c

SHA512
207dc2346c2e344dc1d6cdc068dae3a29dd377bd8b20ec5fc32c93916d8921362e7e55106110c150d6da4ce40313381f15e4c348d1b6af3e36cd2e4e43f80da9

Download Submit
memory/8-190-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/1132-138-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1132-148-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/1132-146-0x00000000031B0000-0x00000000031E6000-memory.dmp

Filesize
216KB

Download
memory/1132-140-0x00000000031B0000-0x00000000031E6000-memory.dmp

Filesize
216KB

Download
memory/1132-137-0x00000000024B0000-0x00000000028B0000-memory.dmp

Filesize
4.0MB

Download
memory/1132-136-0x00000000024B0000-0x00000000028B0000-memory.dmp

Filesize
4.0MB

Download
memory/1132-134-0x0000000002180000-0x00000000021F1000-memory.dmp

Filesize
452KB

Download
memory/1132-135-0x0000000000760000-0x0000000000767000-memory.dmp

Filesize
28KB

Download
memory/2392-167-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2392-178-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3944-158-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-153-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-159-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-160-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-157-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-155-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-162-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-161-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-154-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-152-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-151-0x00007FF488570000-0x00007FF48869D000-memory.dmp

Filesize
1.2MB

Download
memory/3944-150-0x0000022E23460000-0x0000022E23467000-memory.dmp

Filesize
28KB

Download
memory/3944-139-0x0000022E230E0000-0x0000022E230E3000-memory.dmp

Filesize
12KB

Download
memory/3944-149-0x0000022E230E0000-0x0000022E230E3000-memory.dmp

Filesize
12KB

Download
memory/4660-184-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download