nymaim | a60d1c9b77728a02dcc220ace8a145fe8b8b70e52c365419cf447ec7bea0a1f7

Analysis

max time kernel
91s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 12:02

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.2MB
Sample221201-n7gyaaee53
SHA256 a60d1c9b77728a02dcc220ace8a145fe8b8b70e52c365419cf447ec7bea0a1f7
MD5 a4cf8f8e53126e8a6899ca3f154ee45d
SHA1 de8abaf98fb9a28fb1207c291c8291e52c00ef6e
SHA512 24c08bf0448a9827250c45eba7e98f277cbaf6eb02991adf2c1984b6fd1948b9f73a9ed4927fb61cfe3204a694c2ec2fab55bf0a5b537f6cb2946fa73acf3be3
SSDEEP 49152:UPpWjGAA6vPFHleIHavZXDt312vko0/9Ah4WXFXwZi0S5eK/IAG5cyN:UBQGAJvPFHQQvzy3WFmc4vXcyN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
4184	is-IM66Q.tmp
1428	PrintFolders.exe
2508	R6uX31aZsSZ.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	PrintFolders.exe

Loads dropped DLL 1 IoCs

pid	Process
4184	is-IM66Q.tmp

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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-M5OJU.tmp	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\is-5FBA4.tmp	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\is-IE015.tmp	is-IM66Q.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IM66Q.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\is-7C86U.tmp	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\is-4LMR3.tmp	is-IM66Q.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ALI8J.tmp	is-IM66Q.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
816	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1428	PrintFolders.exe
1428	PrintFolders.exe
1428	PrintFolders.exe
1428	PrintFolders.exe
1428	PrintFolders.exe
1428	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	816	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 4184	3916	file.exe	81
PID 3916 wrote to memory of 4184	3916	file.exe	81
PID 3916 wrote to memory of 4184	3916	file.exe	81
PID 4184 wrote to memory of 1428	4184	is-IM66Q.tmp	82
PID 4184 wrote to memory of 1428	4184	is-IM66Q.tmp	82
PID 4184 wrote to memory of 1428	4184	is-IM66Q.tmp	82
PID 1428 wrote to memory of 2508	1428	PrintFolders.exe	83
PID 1428 wrote to memory of 2508	1428	PrintFolders.exe	83
PID 1428 wrote to memory of 2508	1428	PrintFolders.exe	83
PID 1428 wrote to memory of 1752	1428	PrintFolders.exe	92
PID 1428 wrote to memory of 1752	1428	PrintFolders.exe	92
PID 1428 wrote to memory of 1752	1428	PrintFolders.exe	92
PID 1752 wrote to memory of 816	1752	cmd.exe	94
PID 1752 wrote to memory of 816	1752	cmd.exe	94
PID 1752 wrote to memory of 816	1752	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\is-LQI2I.tmp\is-IM66Q.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LQI2I.tmp\is-IM66Q.tmp" /SL4 $60090 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2120811 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4184
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1428
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\R6uX31aZsSZ.exe
      4⤵
      Executes dropped EXE
      PID:2508
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1752
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:816

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.4MB
SHA256 e57691121e0a5bba5d845267b7767fed61d1a9c6617a425c552945285b52d7f6
MD5 f029c2dbf3d79f658f238ac2802ab3a6
SHA1 8cc70a04f62eefe2e275fb7541e83a78c6f2016b
SHA512 f75641c9da5994765821d2a0188c7e29dc0b61caae2326a2dc3a365418169930e234089a04ce8775e73c45ac7fca2f6fc483629fb6994773be035c26309705b3
SSDEEP 49152:lTYLIWzmyJVIqUcO2T2TT70tVJJXXEFGJn+kNM:1Y0AmyJVTUB2TeX0tVJpXEFGJnK
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.4MB
SHA256 e57691121e0a5bba5d845267b7767fed61d1a9c6617a425c552945285b52d7f6
MD5 f029c2dbf3d79f658f238ac2802ab3a6
SHA1 8cc70a04f62eefe2e275fb7541e83a78c6f2016b
SHA512 f75641c9da5994765821d2a0188c7e29dc0b61caae2326a2dc3a365418169930e234089a04ce8775e73c45ac7fca2f6fc483629fb6994773be035c26309705b3
SSDEEP 49152:lTYLIWzmyJVIqUcO2T2TT70tVJJXXEFGJn+kNM:1Y0AmyJVTUB2TeX0tVJpXEFGJnK
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IM66Q.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LQI2I.tmp\is-IM66Q.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IM66Q.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LQI2I.tmp\is-IM66Q.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-RV746.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

R6uX31aZsSZ.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\R6uX31aZsSZ.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

R6uX31aZsSZ.exe

Path C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\R6uX31aZsSZ.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1428-143-0x0000000000400000-0x0000000001567000-memory.dmp

Download

memory/1428-142-0x0000000000400000-0x0000000001567000-memory.dmp

Download

memory/1428-147-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1428-151-0x0000000000400000-0x0000000001567000-memory.dmp

Download

memory/1428-154-0x0000000000400000-0x0000000001567000-memory.dmp

Download

memory/3916-132-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/3916-137-0x0000000000400000-0x0000000000413000-memory.dmp

Download

memory/3916-155-0x0000000000400000-0x0000000000413000-memory.dmp

Download