nymaim | 34d78c5004d8c65f906dc35c4a73b4d537b856f56212dd8e56bffa1f4087d6fe

Analysis

max time kernel
189s
max time network
196s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
08/12/2022, 10:01

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.2MB
Sample221208-l18fjsce9s
SHA256 34d78c5004d8c65f906dc35c4a73b4d537b856f56212dd8e56bffa1f4087d6fe
MD5 5025f1ab64c319d9210dbf17c519d80c
SHA1 2287626551097c04147e7feb6faf25fb5e8d20de
SHA512 4769ec9cae71c549738c1333c85c3b499dcdc0565a410b7259e4a7bd87e30a03afc4f1927b4f18147ab8e600e3c6105a261d32a0832496d2162ad615f5999c07
SSDEEP 49152:CPin0YqxpCDi+ZAAB8LdEcfLA3ADqjJk2ia/kG/LZwN41ks:C6n0YqXCmtLdjfpDqpia//Lf
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
4904	is-G6HFM.tmp
216	IntFolders.exe
4128	L76ti.exe

Loads dropped DLL 1 IoCs

pid	Process
4904	is-G6HFM.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 opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-743HP.tmp	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3E87N.tmp	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-GB0F7.tmp	is-G6HFM.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\IntFolders.exe	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P4HAB.tmp	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-1FLKC.tmp	is-G6HFM.tmp
File created	C:\Program Files (x86)\PrintFolders\is-6DAT5.tmp	is-G6HFM.tmp

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 6 IoCs

pid	Process
216	IntFolders.exe
216	IntFolders.exe
216	IntFolders.exe
216	IntFolders.exe
216	IntFolders.exe
216	IntFolders.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
216	IntFolders.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 4904	2628	file.exe	83
PID 2628 wrote to memory of 4904	2628	file.exe	83
PID 2628 wrote to memory of 4904	2628	file.exe	83
PID 4904 wrote to memory of 216	4904	is-G6HFM.tmp	84
PID 4904 wrote to memory of 216	4904	is-G6HFM.tmp	84
PID 4904 wrote to memory of 216	4904	is-G6HFM.tmp	84
PID 216 wrote to memory of 4128	216	IntFolders.exe	89
PID 216 wrote to memory of 4128	216	IntFolders.exe	89
PID 216 wrote to memory of 4128	216	IntFolders.exe	89

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Users\Admin\AppData\Local\Temp\is-DDSFD.tmp\is-G6HFM.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-DDSFD.tmp\is-G6HFM.tmp" /SL4 $60068 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2031078 73728
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Program Files (x86)\PrintFolders\IntFolders.exe
    "C:\Program Files (x86)\PrintFolders\IntFolders.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:216
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\L76ti.exe
      4⤵
      Executes dropped EXE
      PID:4128

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

IntFolders.exe

Path C:\Program Files (x86)\PrintFolders\IntFolders.exe
Size 3.3MB
SHA256 25ed31861e09967d0a2bd0a923b078b24d2a73155feeba8a01bca4613a088894
MD5 3c08ed7e48903be82a41eb6b06e78d54
SHA1 1332b01b3bd70846f89fb81137152cf4e45e20c2
SHA512 83182c01c1bdd9ccc232690f5455d6686d95093d44c7192f7ad820c877252bcdceacb1b2ef66a367eac1ae717bc96c07e10faa736e1c9949200e5fbc39a58003
SSDEEP 49152:p/KDBIBGD/9FZgnulcuqCMoajDGYYcZDma1Fim2pqW:p/KDWBGTNgnulgoajDGYZZDma152pqW
MD5 SHA1 SHA512 SSDEEP

Submit Download

IntFolders.exe

Path C:\Program Files (x86)\PrintFolders\IntFolders.exe
Size 3.3MB
SHA256 25ed31861e09967d0a2bd0a923b078b24d2a73155feeba8a01bca4613a088894
MD5 3c08ed7e48903be82a41eb6b06e78d54
SHA1 1332b01b3bd70846f89fb81137152cf4e45e20c2
SHA512 83182c01c1bdd9ccc232690f5455d6686d95093d44c7192f7ad820c877252bcdceacb1b2ef66a367eac1ae717bc96c07e10faa736e1c9949200e5fbc39a58003
SSDEEP 49152:p/KDBIBGD/9FZgnulcuqCMoajDGYYcZDma1Fim2pqW:p/KDWBGTNgnulgoajDGYZZDma152pqW
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-G6HFM.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-DDSFD.tmp\is-G6HFM.tmp
Size 665KB
SHA256 2a841ad3820292ff2ab96429635062d0984d0b221e8bd7650777a1c51043b722
MD5 21efb90aabcda42c1232f008bd66fd99
SHA1 563835721536bbd8310eb1dc2fa18966ddffff3d
SHA512 106432d5d58bd2f904cbb9f28771c7b95ccbdd7cdf506b190f5968dbf552ae4ed54cd2f46624ab47cc730c565b7d8d7de7cc51609540df05d0a46c932c20c36e
SSDEEP 12288:/h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvX4xO6:p5NoqWolrP837JzHvA6yknyWFxvoxO6
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-G6HFM.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-DDSFD.tmp\is-G6HFM.tmp
Size 665KB
SHA256 2a841ad3820292ff2ab96429635062d0984d0b221e8bd7650777a1c51043b722
MD5 21efb90aabcda42c1232f008bd66fd99
SHA1 563835721536bbd8310eb1dc2fa18966ddffff3d
SHA512 106432d5d58bd2f904cbb9f28771c7b95ccbdd7cdf506b190f5968dbf552ae4ed54cd2f46624ab47cc730c565b7d8d7de7cc51609540df05d0a46c932c20c36e
SSDEEP 12288:/h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvX4xO6:p5NoqWolrP837JzHvA6yknyWFxvoxO6
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-IID8P.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

L76ti.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\L76ti.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

L76ti.exe

Path C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\L76ti.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/216-148-0x0000000000400000-0x000000000154A000-memory.dmp

Download

memory/216-142-0x0000000000400000-0x000000000154A000-memory.dmp

Download

memory/216-143-0x0000000000400000-0x000000000154A000-memory.dmp

Download

memory/216-144-0x0000000000400000-0x000000000154A000-memory.dmp

Download

memory/2628-137-0x0000000000400000-0x0000000000418000-memory.dmp

Download

memory/2628-132-0x0000000000400000-0x0000000000418000-memory.dmp

Download