nymaim | dfeb71e3035d19bf896d3e320f74a8555e5baa9ec43d45ff5510f6a63c23c3e3

Analysis

max time kernel
242s
max time network
336s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
09/12/2022, 03:46

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General

Target
file.exe
Size 2.2MB
Sample221209-ebmzzsfb6w
SHA256 dfeb71e3035d19bf896d3e320f74a8555e5baa9ec43d45ff5510f6a63c23c3e3
MD5 74208a3804be7ce701f9226c87bb8562
SHA1 3d8a409ef88a77b8c3723fc7e0b4cfab386b9ce7
SHA512 67c6bf3a49842a3918b6cde91ad1b35b13f215e7c1a8ac9d3501d04e0d19940805a31eef178605d085485afeb068fb45b9d258fe8b2b7efdb86f3be1aa95b3be
SSDEEP 49152:KOgTePPP0UKYcft0B93Lwv8HSHl197KhL/qb41CbfoGBrRBZC:KOLm0b3LQ8HSlPGhNEbfNBVBc
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
584	is-IJ0F1.tmp
1812	ntFolders.exe
836	LHt2kHcWS2aH.exe

Loads dropped DLL 10 IoCs

pid	Process
360	file.exe
584	is-IJ0F1.tmp
584	is-IJ0F1.tmp
584	is-IJ0F1.tmp
584	is-IJ0F1.tmp
1812	ntFolders.exe
1812	ntFolders.exe
1812	ntFolders.exe
836	LHt2kHcWS2aH.exe
836	LHt2kHcWS2aH.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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IJ0F1.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\ntFolders.exe	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-QR33K.tmp	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-DLH1N.tmp	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-J28UK.tmp	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-PGJEO.tmp	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-JG88Q.tmp	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IJ0F1.tmp
File created	C:\Program Files (x86)\PrintFolders\is-JP03G.tmp	is-IJ0F1.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 3 IoCs

pid	Process
1812	ntFolders.exe
1812	ntFolders.exe
1812	ntFolders.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 584 wrote to memory of 1812	584	is-IJ0F1.tmp	29
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30
PID 1812 wrote to memory of 836	1812	ntFolders.exe	30

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:360
- C:\Users\Admin\AppData\Local\Temp\is-LSF21.tmp\is-IJ0F1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LSF21.tmp\is-IJ0F1.tmp" /SL4 $B0022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2026245 96256
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:584
- - C:\Program Files (x86)\PrintFolders\ntFolders.exe
    "C:\Program Files (x86)\PrintFolders\ntFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1812
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:836

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

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Downloads

ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 d5dfccd1871dfeb3eb4eebbbee499dae42493c1d9bcfe08509e632c25f49744e
MD5 850c39cac880589fb09bcc18e206e27a
SHA1 62b28b2891c0ac9cd167d08331e7c9f7c7815ae7
SHA512 719b7e7200bc31af91663e44b767130d512398970836f66ae94343e3036ac5b5ac85091f04ad39e38e4030328c5f9347b0a4cb2517cffb72951a2715ac4859d8
SSDEEP 98304:UnyyApRzKcuxD8iFb/oDZaJqW42YT9NJhhD6BY8/431:5RIs
MD5 SHA1 SHA512 SSDEEP

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ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 d5dfccd1871dfeb3eb4eebbbee499dae42493c1d9bcfe08509e632c25f49744e
MD5 850c39cac880589fb09bcc18e206e27a
SHA1 62b28b2891c0ac9cd167d08331e7c9f7c7815ae7
SHA512 719b7e7200bc31af91663e44b767130d512398970836f66ae94343e3036ac5b5ac85091f04ad39e38e4030328c5f9347b0a4cb2517cffb72951a2715ac4859d8
SSDEEP 98304:UnyyApRzKcuxD8iFb/oDZaJqW42YT9NJhhD6BY8/431:5RIs
MD5 SHA1 SHA512 SSDEEP

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is-IJ0F1.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LSF21.tmp\is-IJ0F1.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IJ0F1.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LSF21.tmp\is-IJ0F1.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

LHt2kHcWS2aH.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

LHt2kHcWS2aH.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 d5dfccd1871dfeb3eb4eebbbee499dae42493c1d9bcfe08509e632c25f49744e
MD5 850c39cac880589fb09bcc18e206e27a
SHA1 62b28b2891c0ac9cd167d08331e7c9f7c7815ae7
SHA512 719b7e7200bc31af91663e44b767130d512398970836f66ae94343e3036ac5b5ac85091f04ad39e38e4030328c5f9347b0a4cb2517cffb72951a2715ac4859d8
SSDEEP 98304:UnyyApRzKcuxD8iFb/oDZaJqW42YT9NJhhD6BY8/431:5RIs
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 d5dfccd1871dfeb3eb4eebbbee499dae42493c1d9bcfe08509e632c25f49744e
MD5 850c39cac880589fb09bcc18e206e27a
SHA1 62b28b2891c0ac9cd167d08331e7c9f7c7815ae7
SHA512 719b7e7200bc31af91663e44b767130d512398970836f66ae94343e3036ac5b5ac85091f04ad39e38e4030328c5f9347b0a4cb2517cffb72951a2715ac4859d8
SSDEEP 98304:UnyyApRzKcuxD8iFb/oDZaJqW42YT9NJhhD6BY8/431:5RIs
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 d5dfccd1871dfeb3eb4eebbbee499dae42493c1d9bcfe08509e632c25f49744e
MD5 850c39cac880589fb09bcc18e206e27a
SHA1 62b28b2891c0ac9cd167d08331e7c9f7c7815ae7
SHA512 719b7e7200bc31af91663e44b767130d512398970836f66ae94343e3036ac5b5ac85091f04ad39e38e4030328c5f9347b0a4cb2517cffb72951a2715ac4859d8
SSDEEP 98304:UnyyApRzKcuxD8iFb/oDZaJqW42YT9NJhhD6BY8/431:5RIs
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-F28Q4.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-F28Q4.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-F28Q4.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-IJ0F1.tmp

Path \Users\Admin\AppData\Local\Temp\is-LSF21.tmp\is-IJ0F1.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

LHt2kHcWS2aH.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

LHt2kHcWS2aH.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

LHt2kHcWS2aH.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LHt2kHcWS2aH.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/360-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

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memory/360-55-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/360-57-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/584-69-0x0000000003200000-0x000000000433F000-memory.dmp

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memory/584-77-0x0000000003200000-0x000000000433F000-memory.dmp

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memory/1812-80-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1812-81-0x0000000001CA0000-0x0000000002DDF000-memory.dmp

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memory/1812-79-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1812-78-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1812-76-0x0000000001CA0000-0x0000000002DDF000-memory.dmp

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memory/1812-75-0x0000000001CA0000-0x0000000002DDF000-memory.dmp

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memory/1812-70-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/1812-89-0x0000000001CA0000-0x0000000002DDF000-memory.dmp

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memory/1812-90-0x0000000000400000-0x000000000153F000-memory.dmp

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