446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

Resubmissions

22/05/2023, 08:09

230522-j15zbahf9x 7

08/05/2023, 11:01

230508-m4jf9sac65 7

Analysis

max time kernel
146s
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
22/05/2023, 08:09

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General

Target

verybigchimpanzee.exe
Size

344KB
MD5

aec814bf30dd191b641feef457a718ce
SHA1

96c2bea5b416d10a2dae60acd2b7f9c7cebb8115
SHA256

446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89
SHA512

fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0
SSDEEP

6144:SXRrO+JguvyIs1DkhmgPZw6JXAL5+9bbYZQ4:ir/9m3cYZQ

Score

7^/10

collection discovery spyware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 4 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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	verybigchimpanzee.exe

Executes dropped EXE 6 IoCs

pid	Process
1512	verybigchimpanzee.exe
696	tor.exe
3712	verybigchimpanzee.exe
880	tor.exe
2428	verybigchimpanzee.exe
400	tor.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 Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
44	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4836	3712	WerFault.exe	104
1396	2428	WerFault.exe	109

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
1728	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3712	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1512	verybigchimpanzee.exe
1512	verybigchimpanzee.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	verybigchimpanzee.exe
Token: SeDebugPrivilege	1512	verybigchimpanzee.exe
Token: SeDebugPrivilege	3712	verybigchimpanzee.exe
Token: SeDebugPrivilege	2428	verybigchimpanzee.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1512	verybigchimpanzee.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 4920	1784	verybigchimpanzee.exe	87
PID 1784 wrote to memory of 4920	1784	verybigchimpanzee.exe	87
PID 4920 wrote to memory of 220	4920	cmd.exe	89
PID 4920 wrote to memory of 220	4920	cmd.exe	89
PID 4920 wrote to memory of 3712	4920	cmd.exe	90
PID 4920 wrote to memory of 3712	4920	cmd.exe	90
PID 4920 wrote to memory of 1728	4920	cmd.exe	91
PID 4920 wrote to memory of 1728	4920	cmd.exe	91
PID 4920 wrote to memory of 1512	4920	cmd.exe	92
PID 4920 wrote to memory of 1512	4920	cmd.exe	92
PID 1512 wrote to memory of 4584	1512	verybigchimpanzee.exe	93
PID 1512 wrote to memory of 4584	1512	verybigchimpanzee.exe	93
PID 1512 wrote to memory of 696	1512	verybigchimpanzee.exe	95
PID 1512 wrote to memory of 696	1512	verybigchimpanzee.exe	95
PID 3712 wrote to memory of 880	3712	verybigchimpanzee.exe	105
PID 3712 wrote to memory of 880	3712	verybigchimpanzee.exe	105
PID 2428 wrote to memory of 400	2428	verybigchimpanzee.exe	110
PID 2428 wrote to memory of 400	2428	verybigchimpanzee.exe	110

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	verybigchimpanzee.exe

C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe
"C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "verybigchimpanzee" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\verybigchimpanzee.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:220
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3712
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "verybigchimpanzee" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1728
- - C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
    "C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - outlook_office_path
    - outlook_win_path
    PID:1512
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmpCD67.tmp" -C "C:\Users\Admin\AppData\Local\8lxyt4fm8n"
      4⤵
      PID:4584
  - - C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
      "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:696

C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
  "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:880
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 3712 -s 2416
  2⤵
  - Program crash
  PID:4836

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 208 -p 3712 -ip 3712
1⤵
PID:2704

C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
  "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:400
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2428 -s 2076
  2⤵
  - Program crash
  PID:1396

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 504 -p 2428 -ip 2428
1⤵
PID:3408

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

Credentials in Files

T1081

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdesc-consensus.tmp

Filesize
2.2MB

MD5
b757486e4404779d260e2ee9027ae5bd

SHA1
efaa1a33e922de62a0d40ef76e7099fc1ef2eda9

SHA256
44f77036d6cda7db1020a94fda8756c7b1e75bba60def355d66e327914a77b8c

SHA512
3a95565bdac1bb0c8b6631caff20803b82eed227cb9c5e35f74ef7a7897dee9751e522aebcb6183fa30ed774000943a82acccb7ab6db9fdc948799691ae75655

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdescs.new

Filesize
6.2MB

MD5
1cb9a82c35de574cfcd32dbb96758586

SHA1
90f965f9828a15e5db6a58f5c8069bfed0a12da9

SHA256
3e5fd4918273263b314e59f12b0e8c934b39a62f01f39fa2554e5e85c281d8ce

SHA512
d02f8245cb9caa008c6b1a5be04e0bbb89283461695cb918b2d4be35e5d2ddd72aa965e183353a6689f0d40068b2367036e565a0678d42a35f9985257bdd6b2e

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\host\hostname

Filesize
64B

MD5
6781cc334b60130f13cee43c7f9302f1

SHA1
2572bbe01d34c62044141a17370e4a97ade7e7b1

SHA256
36e6574ea90b3d59f3949af56cdf307169b3513fe38dc6fe1d8d54cb2f16f2ee

SHA512
fc934232d91bf6fd223cd8e95b56aca5a12c0907cd5d67c6e8b02284b4ac956d1256d6c2aaca84cd42fe5f98f73875051fee9e59155c74ecba4d20b22e5c2752

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\port.dat

Filesize
4B

MD5
575425a3f433138553be468c9d1ecba7

SHA1
6bae87122ce00b61e523513e1d3d0e1c1c5a67dc

SHA256
70252984654c35f9f8f37247ae126116e93be2f3acf82061cf06981916e8f828

SHA512
305db70f83681d1639ea48aa140a72c0106b0b447c3ad89d9d684350858b1cbe3f7b9b0a1e6266f043a53da7bc688544c096ffa33dc8ebbe071db70162410553

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt

Filesize
218B

MD5
1489a83d38845245ad8671f6ed9b841f

SHA1
51584ee8e6a2c32a7bbbaf8190401b15ff4cb6f3

SHA256
ffab7a8029aa1206172df8020d6639b5344a6c4926c1c18471d18ee9e62a5482

SHA512
3ee4c9db8011336aa642937c144d1f728871c3b359f6d07fbaec0a8c28f1320c4977f6c02777b6454486de8fd8367e0e4b2bb4fec29249aa8a239faad44ebb0c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\verybigchimpanzee.exe.log

Filesize
847B

MD5
3308a84a40841fab7dfec198b3c31af7

SHA1
4e7ab6336c0538be5dd7da529c0265b3b6523083

SHA256
169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

SHA512
97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\verybigchimpanzee.exe

Filesize
344KB

MD5
aec814bf30dd191b641feef457a718ce

SHA1
96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

SHA256
446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

SHA512
fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCD67.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
memory/1512-170-0x0000021C1CF40000-0x0000021C1CF50000-memory.dmp

Filesize
64KB

Download
memory/1512-143-0x0000021C1CF40000-0x0000021C1CF50000-memory.dmp

Filesize
64KB

Download
memory/1784-134-0x000001A0E75E0000-0x000001A0E75F0000-memory.dmp

Filesize
64KB

Download
memory/1784-133-0x000001A0E5720000-0x000001A0E577C000-memory.dmp

Filesize
368KB

Download
memory/2428-212-0x0000018EF1880000-0x0000018EF1890000-memory.dmp

Filesize
64KB

Download
memory/3712-205-0x00000233B7040000-0x00000233B7050000-memory.dmp

Filesize
64KB

Download